nereus.018.log Asteroid 4660 Nereus 2002 January 18 Updated: 2008 March 19 ========================================================= Schedule and SNR Calculation Duration Rotation Jan UTC PST RA Dec AU RunSNR (h) (°) 15 1730-2205 0930-1405 321 -1 0.036 100 4.58 109 18 1645-0005 0845-1605 308 -6 0.031 170 7.33 175 19 1630-2335 0830-1535 303 -8 0.030 190 7.08 169 20 1635-2300 0835-1500 298 -10 0.029 200 6.42 153 22 1530-2005 0730-1205 286 -13 0.029 210 4.58 109 23 1505-1950 0705-1150 280 -15 0.029 200 4.75 113 24 1445-1730 0645-0930 274 -16 0.030 190 2.75 66 25 1425-1855 0625-1055 268 -17 0.031 170 4.50 107 26 1405-1915 0605-1115 263 -18 0.032 150 5.17 123 27 1345-1910 0545-1110 258 -19 0.033 120 5.42 129 29 1315-1830 0515-1030 250 -20 0.037 88 5.25 125 ========================================================= UNCERTAINTIES With 282 optical observations spanning 30-SEP-1981 to 4-JAN-2002 5 delay and 2 Doppler, 4660 Nereus solution #30 was computed. 3-sigma X-band uncertainties are shown below. Files have been updated at Goldstone and Arecibo. Note TPM prediction error is one of the uncalibrated error sources not included in these uncertainty predictions. This is why Doppler error is sometimes replaced by "<1.000" Hz when it gets very small. Here I left it. DATE Pointing X-band Dop Delay (") Hz (sec) ----------------- --------- ---------- ---------- 8-JAN-2002 00:00 1.331 0.178 0.000040 10-JAN-2002 00:00 1.157 0.130 0.000012 12-JAN-2002 00:00 1.084 0.124 0.000004 14-JAN-2002 00:00 1.227 0.133 0.000013 16-JAN-2002 00:00 1.385 0.157 0.000027 18-JAN-2002 00:00 1.540 0.194 0.000045 20-JAN-2002 00:00 1.654 0.240 0.000066 22-JAN-2002 00:00 1.691 0.283 0.000089 24-JAN-2002 00:00 1.647 0.315 0.000110 26-JAN-2002 00:00 1.536 0.330 0.000127 28-JAN-2002 00:00 1.408 0.328 0.000138 ========================================================= Pointing macro for January 18 TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2002 01 18 018 160000 309.2024 -5.7529 A 31.5 26 2002 01 18 018 170000 308.9876 -5.8265 A 31.4 2002 01 18 018 180000 308.7683 -5.9000 A 0.0019 -0.0007 31.4 2002 01 18 018 190000 308.5455 -5.9734 A B 31.3 2002 01 18 018 200000 308.3202 -6.0466 A B 31.2 2002 01 18 018 210000 308.0935 -6.1195 B 31.2 2002 01 18 018 220000 307.8667 -6.1920 B 0.0020 -0.0007 31.1 2002 01 18 018 230000 307.6408 -6.2643 B 31.1 2002 01 19 019 000000 307.4170 -6.3363 B 31.1 2002 01 19 019 010000 307.1961 -6.4082 B 31.0 PRDX.OUT.s32 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2002 JAN 18 16:40 31.4309707631 142248.385 301.9604 -5.8018 309.060 21.748 2002 JAN 18 16:50 31.4210252020 141525.625 304.5032 -5.8141 309.024 23.609 2002 JAN 18 17:00 31.4111315562 140767.201 307.0462 -5.8264 308.988 25.439 2002 JAN 18 17:10 31.4012922893 139974.225 309.5893 -5.8386 308.951 27.235 2002 JAN 18 17:20 31.3915097799 139147.880 312.1325 -5.8509 308.915 28.994 2002 JAN 18 17:30 31.3817863279 138289.412 314.6759 -5.8631 308.879 30.712 2002 JAN 18 17:40 31.3721241350 137400.131 317.2193 -5.8754 308.842 32.385 2002 JAN 18 17:50 31.3625253131 136481.410 319.7629 -5.8876 308.805 34.008 2002 JAN 18 18:00 31.3529918803 135534.678 322.3065 -5.8999 308.768 35.577 2002 JAN 18 18:10 31.3435257438 134561.421 324.8503 -5.9121 308.731 37.087 2002 JAN 18 18:20 31.3341287136 133563.176 327.3941 -5.9244 308.694 38.532 2002 JAN 18 18:30 31.3248024816 132541.530 329.9381 -5.9366 308.657 39.905 2002 JAN 18 18:40 31.3155486331 131498.116 332.4821 -5.9488 308.620 41.202 2002 JAN 18 18:50 31.3063686352 130434.611 335.0262 -5.9611 308.583 42.414 2002 JAN 18 19:00 31.2972638364 129352.731 337.5704 -5.9733 308.546 43.536 2002 JAN 18 19:10 31.2882354632 128254.227 340.1146 -5.9855 308.508 44.560 2002 JAN 18 19:20 31.2792846186 127140.886 342.6589 -5.9977 308.471 45.480 2002 JAN 18 19:30 31.2704122791 126014.522 345.2033 -6.0099 308.433 46.288 2002 JAN 18 19:40 31.2616192910 124876.974 347.7477 -6.0221 308.396 46.979 2002 JAN 18 19:50 31.2529063773 123730.106 350.2922 -6.0343 308.358 47.545 2002 JAN 18 20:00 31.2442741233 122575.797 352.8367 -6.0464 308.320 47.983 2002 JAN 18 20:10 31.2357229843 121415.942 355.3813 -6.0586 308.283 48.288 2002 JAN 18 20:20 31.2272532823 120252.447 357.9259 -6.0708 308.245 48.457 2002 JAN 18 20:30 31.2188652053 119087.225 0.4705 -6.0829 308.207 48.489 2002 JAN 18 20:40 31.2105588053 117922.192 3.0152 -6.0951 308.169 48.382 2002 JAN 18 20:50 31.2023340058 116759.263 5.5598 -6.1072 308.131 48.139 2002 JAN 18 21:00 31.1941905906 115600.348 8.1045 -6.1193 308.094 47.760 2002 JAN 18 21:10 31.1861282113 114447.351 10.6492 -6.1314 308.056 47.251 2002 JAN 18 21:20 31.1781463870 113302.161 13.1938 -6.1435 308.018 46.616 2002 JAN 18 21:30 31.1702445046 112166.654 15.7385 -6.1556 307.980 45.860 2002 JAN 18 21:40 31.1624218203 111042.683 18.2832 -6.1677 307.942 44.989 2002 JAN 18 21:50 31.1546774612 109932.081 20.8278 -6.1798 307.905 44.011 2002 JAN 18 22:00 31.1470104247 108836.652 23.3724 -6.1919 307.867 42.931 2002 JAN 18 22:10 31.1394195890 107758.171 25.9170 -6.2040 307.829 41.757 2002 JAN 18 22:20 31.1319037030 106698.378 28.4616 -6.2160 307.791 40.497 2002 JAN 18 22:30 31.1244613951 105658.975 31.0061 -6.2281 307.754 39.155 2002 JAN 18 22:40 31.1170911813 104641.625 33.5505 -6.2401 307.716 37.740 2002 JAN 18 22:50 31.1097914553 103647.943 36.0950 -6.2521 307.678 36.257 2002 JAN 18 23:00 31.1025605064 102679.502 38.6393 -6.2642 307.641 34.711 2002 JAN 18 23:10 31.0953965082 101737.820 41.1836 -6.2762 307.603 33.109 2002 JAN 18 23:20 31.0882975355 100824.364 43.7279 -6.2882 307.566 31.454 2002 JAN 18 23:30 31.0812615579 99940.542 46.2721 -6.3002 307.529 29.752 2002 JAN 18 23:40 31.0742864546 99087.706 48.8162 -6.3122 307.491 28.007 2002 JAN 18 23:50 31.0673700044 98267.145 51.3602 -6.3242 307.454 26.223 2002 JAN 19 00:00 31.0605099036 97480.082 53.9042 -6.3362 307.417 24.404 2002 JAN 19 00:10 31.0537037615 96727.675 56.4481 -6.3482 307.380 22.552 ========================================================= BEGIN ELECTRONIC LOG Benner, Ostro, & Giorgini at JPL Jurgens, Rose, Kern, Smith, Jao, Frye, Choate, Franck at Goldstone Start with solution 32 We'll start with cw, transmitting 10 runs with RCP and then 10 runs with LCP, go to 1 us to update the range, and then to 1/8 us x 1/4 Hz imaging. Internet connections are not guaranteed because they were planning to replace routers yesterday. TX Power = xxx kW TX polarization RCP RCV polarization 1=RCP=SC= K at zenith K on point at 1739 UTC 2=LCP=OC= K at zenith K on point Boresight source: (elevation = degrees) Corrections: AX = mdeg EL = mdeg Starting CW setup: TX polarization RCP RCV polarization LCP Frequencies: 2 Dwell: 10 seconds (RTT is only 31 seconds; 15 sec dwells might not work) Bandwidth: 2000 Hz Sampling interval: 5000 x 0.1 usec VME FFT for PSD files: 4096 for 0.48828-Hz resolution 1730: I called out twice from home prior to the track. At 1645 they had just finished the boresight and were going to the source. I calle again at 1720 and they were on tx LCP run #9. They did several runs with dwell = 15 sec before Randy realized they had the wrong dwell, so they switched it to 10 s (as I instructed). Randy said that the echo is centered at about -1 Hz, although that could be due to asymmetry in the shape. We're going to get it with 1.0 us after we finish 10 cw runs transmitting LCP. Then we'll go to 1/8 us x 1/4 Hz imaging for the rest of the track. Randy mentioned earlier that Compaq hadn't called back and that nobody came to service the VAX. 1750: They completed the 20 cw cycles. They forgot to change file names so they're all in the same file. 1.0 us x 3.0 Hz setup --------------------- (code=127, FFT=64, single-pol'n) _______________________________________________________________________ Setup Baud RP 1-acc 1-acc usec m usec band res acc band res JX1XS010 1.000 150 127.0 7874.0 123.0 41 192 3.0 txoff = +30 Hz (= +10 Doppler bins or bin 32+10=42) loopback should be in gate 13. They did the 1.0 us loopback and were working on the cold sky when they had the cpu problems with the vax again. Originally they were getting the same error message we got on Tuesday, so Carl started to run the diagnostics, which cleared the problem last time. Now a new error has popped up. They called Compaq and those guys are on standby ready to drive out (from San Bernardino, I think) today if necessary. Of even greater concern is that Joel, who is just coming up to speed, is leaving to take a job back in Barstow and Al, who is very good, is about to do a second interview for a better-paying job in Pasadena. That would leave Randy as the sole operator again, and he's not happy about it. He's thinking about leaving too. Yikes! If running the vax diagnostics doesn't work, then we can take data with the PFS. The track is NOT off to a good start. 1810: Ray called. vme & vax phases differ--about 10-13 us different, so absolute ranges are problematic with vme. Fine, we won't try any ranging with the VME, but while they're working on the vax we're going to image with the VME/PFS and forget about 1.0 us for now. 1857: taking imaging data w/PFS. Ray and Joseph are working with a script Jean-Luc provided to look at the PFS images to verify that the data are good. Not clear yet if they have the script working. Meanwhile, the vax diagnostics identified the module giving us trouble so the Compaq people are going to come out. This is the new problem, not the cpu problem that we had on DOY 15. The vax is coming back up and Carl is getting it ready, so we're hopeful that we can start imaging with it within an hour. 1920: Ray called. PFS datataking is going well but haven't been able to get the script to run to see images. Tried calling Jean-Luc; haven't reached him yet. vax is back up so they're stopping with the PFS and switching to the vax. We're going to do 1.0 us x 3.0 Hz ranging and then 1/8 us imaging. 1/8 us x 1/4 Hz --------------- (code=127, FFT=128, single-pol'n) Setup Baud RP 1-acc 1-acc usec m usec band res acc band res JX1XS001 0.125 18.75 15.875 62992.1 246.1 1970 32 0.2498 txoff = +8 Hz CLT = gate 34 **************************************************************************************** 2008 March 19: It turns out that we usec 1968 coherent sums, so the frequency resolution was 0.250064 Hz, not 0.2498 as stated above We are using records 8 seconds long, so each has two FFTs. We're getting about 30 seconds per cycle, so after the VAX tossed the first record, we got 2-3 records (some records are incomplete--we got parts of them at the end of runs). **************************************************************************************** 1955: Randy called. vax is up. 1.0 us echo came in 1-2 gates late. Fax that Randy sent shows a correction of +2 us. (clt = 13, te = 15). They also sent a fax of the 1/8 us display--echo LE is in gate 39, com is at about 45, so the echo is about 45-33 = 12 gates late. I'll update the orbit and generate a new solution for use tomorrow. Epoch = 20:00:00 Correction = +12 gates = (12 gates/8 gates/us) = +1.5 us +/- 0.5 us PRDX.OUT.s32 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER 2002 JAN 18 20:00 31.2442741233 122575.797 +0.0000015 +/- 0.5 us ------------ 31.2442756 +/- 0.5 us DELAY (weight in 10^-6 sec): 1937 12 02 19:50:00 R 42.590780605 10.000 8560.D6 -14 Reber,G. yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer... 2002 01 18 20:00:00 R 31.2442756 0.5 8560.D6 -14 Benner, L.A.M. Correction of +1.5 us to solution 32 from 1/8 us imaging. Place COM at center of TE in gate 45 (loop back is in gate 33). 2045: called out and spoke with Al and Ray. vax Imaging is going smoothly. Ray is trying to figure out why the vme and vax ranges differ, Joseph is working on Jean-Luc's PFS script. They haven't been able to reach Jean-Luc today and they don't know if the PFS imaging worked. Ray and I discussed going to even higher resolution. We have the SNR. We're going to use the same setup tomorrow but using a 256 FFT instead of 128. The bandwidth will be the same: 32 Hz. Each look will be 8 seconds long so we'll get four looks/run, but the vax tosses the first, so we'll get 3 looks/run and 0.125 Hz resolution. Leading edge is still in gate 39, same as it was at 19:57. 2058: vax stopped four minutes ago due to the ^C problem (about 50 runs). They're doing a boresight and then will resume. They hadn't cleared the display while imaging before so we don't know if the image smeared or not. 2100: called to ask them to transfer the imaging data to intruder, but nobody picked up the phone! Perhaps they're all out taking a potty break or smoking...? 2124: Spoke with Joel: they didn't do a boresight--couldn't find any stars close enough, so they're imaging again. 2137: fax shows that LE is in gate 43, so the echo has moved back by 4 range gates since we started imaging. Earlier Randy and Ray mentioned that the echo was centered at -1 Hz, so if that was ephemeris error (instead of an asymmetric shape), the echo should drift by about 0.4 us/h or about 3 gates/h, which is about right. I'm going to estimate the range again near the end of the track in order to nail the Doppler. 221803 vax quit on run 54. They're restarting. VAX is working OK so far. When I spoke with Ray earlier he mentioned that Compaq may not renew the service contract past February. In part that's because they're VAX expert may leave the company and they don't have anyone else who knows vaxes well enough. 2322: spoke with Joel. Going well. 0008: game over for this track. Ray emailed me about the PFS: they never saw clear echoes in the PFS data and Jean-Luc wasn't available to help them look at the data. Evidently he's out of town. Need to get a new range and update the ephemeris. - - - - - - - - - - - - - - - - - - - - 0147: I did a quick reduction of the imaging data: it's OK. I grouped the first 20 minutes (centered on 20:00:00) and the last 10 minutes (centered on 00:00:00 Jan. 19) to estimate range corrections. I now estimate that the COM is in gate 46, not gate 45. That's close enough that I'm going to stay with the earlier estimate. At 00:00:00 I estimate that the COM is in gate 55, so the correction is 55-33 = 22 gates or 22/8 us = +2.75 us +/- 0.5 us. PRDX.OUT.s32 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER 2002 JAN 19 00:00 31.0605099036 97480.082 +0.00000275 +/- 0.5 us -------------------- 31.06051265 +/- 0.5 us DELAY (weight in 10^-6 sec): 1937 12 02 19:50:00 R 42.590780605 10.000 8560.D6 -14 Reber,G. yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer... 2002 01 19 00:00:00 R 31.06051265 0.5 8560.D6 -14 Benner, L. A. M. Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging. Placed COM near center of the trailing edge. enter into osod: OSOD -- JPL On-Site Orbit Determination v p1.3 ("?" for command list) Object name: Asteroid 4660 Nereus osod > add rad Example DELAY or DOPPLER input (time is U.T.C.) -- DELAY (weight in 10^-6 sec): 1937 12 02 19:50:00 R 42.590780605 10.000 8560.D6 -14 Reber,G. yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer... DOPPLER (weight in Hertz) : 1937 11 27 22:20:00 P -540576.10D0 1.0000 8560.D6 -14 -13 Reber,G. yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer... : 2002 01 18 20:00:00 R 31.2442756 0.5 8560.D6 -14 Benner, L.A.M. Enter up to two 78-character comment lines one record) -- : Correction of +1.5 us to solution 32 from 1/8 us imaging. Place COM at : center of TE in gate 45 (loop back is in gate 33). Observation being processed: 2002 1 18 20:00:00 ADDFILE report: 1 record added osod > add rad Example DELAY or DOPPLER input (time is U.T.C.) -- DELAY (weight in 10^-6 sec): 1937 12 02 19:50:00 R 42.590780605 10.000 8560.D6 -14 Reber,G. yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer... DOPPLER (weight in Hertz) : 1937 11 27 22:20:00 P -540576.10D0 1.0000 8560.D6 -14 -13 Reber,G. yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer... : 2002 01 19 00:00:00 R 31.06051265 0.5 8560.D6 -14 Benner, L. A. M. Enter up to two 78-character comment lines one record) -- : Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging. Placed : COM near center of the trailing edge. Observation being processed: 2002 1 19 00:00:00 ADDFILE report: 1 record added osod > cmod 32 USERFILE contained 323 observation(s) ADDFILE contained 10 observation(s) MERGEFILE contains 333 observation(s) CMOD varlist over-ride ISOLN = 32 Pass 1 integration step: 2444984.175 1982 Jan 14.675 -0.35429 Pass 2 integration step: 2444979.811 1982 Jan 10.311 -0.58820 ^L Observations, Residuals and Residual Differences - Pass 2 Observation Obs J2000 Residuals Sigmas Res. Differences Date(UTC) R.A. Dec. Code R.A.cosD Dec. RSS R.A. Dec Predicted-2nd Pass AR2002 119.000000 00000 31.06051265 -14 Delay -0.003 0.500 0.000 AR2002 118.833333 200000 31.2442756 -14 Delay 0.063 0.500 0.000 AR2002 115.770833 183000 36.122088 -14 Delay -0.596 1.000 0.000 AR2002 111.775000 183600 44.91829868 -1 Delay 0.602 1.500 0.000 AP2002 111.770833 183000 68417.78 -1 Doppler -0.045 0.200 0.000 AR2002 110.818750 193900 47.2799725 -1 Delay 0.352 1.500 0.000 AR2002 1 9.781944 184600 49.916029 -1 Delay -0.031 4.000 0.000 AC2002 1 4.761740 225833.50 +063027.5 113 -0.379 0.136 0.402 1.0 1.0 0.000 0.000 AC2002 1 4.760570 225833.88 +063028.4 113 0.329 -0.367 0.493 1.0 1.0 -0.001 0.000 AC2002 1 4.759390 225834.21 +063030.1 113 0.246 -0.082 0.260 1.0 1.0 -0.001 0.000 AC2002 1 4.758210 225834.53 +063031.7 113 0.011 0.104 0.104 1.0 1.0 -0.001 0.000 AC2002 1 4.757030 225834.89 +063033.2 113 0.370 0.190 0.416 1.0 1.0 -0.001 0.000 AC2002 1 2.727620 230630.90 +070508.6 151 0.379 0.062 0.384 1.0 1.0 0.000 0.000 AC2002 1 2.725430 230631.43 +070510.6 151 0.309 0.034 0.311 1.0 1.0 -0.001 0.000 AC2002 1 2.723080 230631.98 +070512.7 151 -0.051 -0.040 0.065 1.0 1.0 -0.001 0.000 AC2002 1 2.720080 230632.72 +070515.8 151 0.045 0.288 0.291 1.0 1.0 -0.001 0.000 AC20011230.730080 231542.10 +074247.7 118 -0.566 -0.444 0.719 1.0 1.0 0.000 0.000 AC20011230.713770 231545.16 +074258.4 118 -0.705 -0.499 0.863 1.0 1.0 0.000 0.000 AC20011230.712530 231545.40 +074259.5 118 -0.617 -0.212 0.653 1.0 1.0 0.000 0.000 AC20011225.103730 232740.18 +082752.3 691 -0.137 -0.209 0.250 1.0 1.0 0.000 0.000 AC20011225.088500 232742.21 +082758.2 691 -0.175 -0.288 0.337 1.0 1.0 0.000 0.000 AC20011225.073990 232744.16 +082803.7 691 -0.207 -0.384 0.436 1.0 1.0 0.000 0.000 AR20011220.953472 225300 103.2425114 -1 Delay -1.286 4.000 0.000 AR20011218.903472 214100 108.380755 -1 Delay 1.358 10.000 0.000 AP20011218.903472 214100 69201.3 -1 Doppler -0.111 0.200 0.000 Radar residuals look very good. ========= Close Approach Summary (b-plane) Time (TDB) Date (TDB) Body CA Dist MinDist MaxDist Vrel TCA3Sg SMaA SMiA Theta Nsigs P_i/p 2444993.34503 1982 Jan 23.84503 Earth .027711 .027711 .027712 5.408 0.54 6.18283 3.01728 -45.73 4.74E5 .000000 2450187.57936 1996 Apr 14.07936 Mars .075456 .075456 .075456 11.550 0.05 16.0964 8.66209 -24.03 7.63E5 .000000 2452297.01582 2002 Jan 22.51582 Earth .029024 .029024 .029024 5.419 0.01 3.87835 .121878 88.46 1.55E7 .000000 iter 32 iter 33 eph 34 pred x --------------------------------------------------------------------------- DELAY (weight in 10^-6 sec): 1937 12 02 19:50:00 R 42.590780605 10.000 8560.D6 -14 Reber,G. yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer... DOPPLER (weight in Hertz) : 1937 11 27 22:20:00 P -540576.10D0 1.0000 8560.D6 -14 -13 Reber,G. yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer... =================================================================================================== MASTERLOG =================================================================================================== RCV file setup runs start -stop osod OFFSET TX Poln --------------------------------------------------------------------------------------------------- PSD02018.4660_Nereus, VOLT02018.4660_Nereus CW 2 kHz 4096 FFT 10 165836-170845 32 none RCP same file,15 s dwell CW 2 kHz 4096 FFT 10 171301-172310 32 none RCP same file,10 s dwell CW 2 kHz 4096 FFT 10 172831-173841 32 none LCP same file,10 s dwell PFS 1/8 us 127 code 49 183025-192217 32 +8 RCP ne01803 1 us x 3.0 Hz 127 code 4 193006-193357 32 +30 RCP ne01806 1/8 us x 1/4 Hz 127 code 58 194953-205440 32 +8 RCP ne01807 1/8 us x 1/4 Hz 127 code 54 211746-221803 32 +8 RCP ne01808 1/8 us x 1/4 Hz 127 code 54 222329-232336 32 +8 RCP ne01809 1/8 us x 1/4 Hz 127 code 35 232444-000519 32 +8 RCP =================================================================================================== ASTROMETRY ========== 2002 01 18 20:00:00 R 31.2442756 0.5 8560.D6 -14 Benner, L.A.M. Correction of +1.5 us to solution 32 from 1/8 us imaging. Place COM at center of TE in gate 45 (loop back is in gate 33). 2002 01 19 00:00:00 R 31.06051265 0.5 8560.D6 -14 Benner, L. A. M. Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging. Placed COM near center of the trailing edge. =================================================================================================== PROBLEMS ======== 1. Forgot to change vme files when we switched from transmitting RCP to LCP. Not a big deal. 2. Gain on channel one is unstable--it's a problem upstairs, now made clear because they fixed the relay switch (so new problems are now evident) 3. vax cpu error and a new error in a module. running the vax diagnostics is bypassing the problems but not solving them. Things to do after the track ============================ 1. ftp cw data from the VME -> intruder ==> done 2. scp cw data from intruder -> JPL ==> done 3. ftp ranging data from the VAX -> intruder ==> done 4. convert vax *.dat files to rdf files ==> done 5 scp rdf ranging data from intruder -> JPL ==> done 6. ftp tx/rcv logs to intruder ==> done 7. scp tx/rcv logs from intruder to JPL ==> done 8. write protect all data files at JPL ==> done 9. write protect tx/rcv, ops, & cal log files at JPL ==> done 10.update planning page w/astrometry ==> 11.draft a log file for the next track ==> 12.critique ==> not out there 13.get the data package ==> later 14.back up the data -> exabyte tape & write protect it ==> 15.organize hardcopies in the notebook ==> 16.scp observational log -> JPL and write protect it ==> already at JPL 17.e-mail brief summary of results -> co-authors ==> 18.e-mail brief summary -> Ralph & Larry ==> 19.do a preliminary reduction of the cw data ==> 20.reduce the imaging data ==> done 21.scp new orbital solutions from intruder -> JPL ==> done 22.Contact optical observers (Pravec, Hicks, Buie...) ==> 23.draft an imaging script for the next track ==> 24.update the masterlog ==>