File talk:Animation of CAPSTONE around Earth.gif
Odd discontinuity at 2022-12-14 in Horizons data, visible here[edit]
There is a jerky motion in the video visible here as CAPSTONE enters the rather stable orbit near the Moon on Dec 14. I've also noticed in my own retrieval of the Horizons data (below).
In this data it also suddenly shifts from getting further from earth each day, to getting closer (see deldot column).
If anyone knows what is going on between these points, let me know.
Date__(UT)__HR:MN:SS R.A._____(ICRF)_____DEC delta deldot S-O-T /r S-T-O Cnst ObsEcLon ObsEcLat 2022-Dec-09 07:29:08 05 39 19.86 +12 02 42.3 6.3302378876E+05 0.5933912 166.1964 /T 13.7452 Ori 84.8524475 -11.3016707 2022-Dec-10 07:29:08 05 52 01.35 +12 51 48.4 6.8186620075E+05 0.5386379 165.3996 /T 14.5340 Tau 88.0279689 -10.5619823 2022-Dec-11 07:29:08 06 03 08.54 +13 33 40.9 7.2630852741E+05 0.4911886 164.6000 /T 15.3254 Ori 90.7809275 -9.8756263 2022-Dec-12 07:29:08 06 13 03.89 +14 10 03.0 7.6689942680E+05 0.4492310 163.8614 /T 16.0562 Ori 93.2140972 -9.2352271 2022-Dec-13 07:29:08 06 22 02.56 +14 42 08.5 8.0405464416E+05 0.4114815 163.2066 /T 16.7037 Ori 95.3966591 -8.6336532 2022-Dec-14 07:29:08 09 53 41.26 +08 11 17.1 4.1721655133E+05 -0.0669718 114.1343 /T 65.7178 Leo 147.7447953 -4.3299009 2022-Dec-15 07:29:08 10 36 26.31 +05 29 45.8 4.0891284965E+05 -0.1242261 104.3099 /T 75.5361 Sex 158.6388615 -3.0558103 2022-Dec-16 07:29:08 11 25 31.42 +03 41 13.8 3.9612665096E+05 -0.1673826 93.3553 /T 86.4908 Leo 170.6312457 -0.0279248 2022-Dec-17 07:29:08 12 28 17.82 -02 57 25.6 3.8956341462E+05 0.0539871 77.3413 /T 102.5107 Vir 187.6627556 0.091
★NealMcB★ (talk) 23:37, 12 July 2022 (UTC)
- @Phoenix7777 Can you modify the image to fix the issue? Ergzay (talk) 17:45, 24 July 2022 (UTC)
@Nealmcb: It is a fault of Horizons' data. See this data. There is an apparent glitch between 2022-Dec-14 00:01:00 and 00:01:30. This is because a discontinuity of two data:
Trajectory name Start (TDB) Stop (TDB) ---------------------------------------- ----------------- ----------------- 20220722_20221214_split-prelim_od010_V0.2 2022-Jul 22 00:01 2022-Dec-14 00:01 ref_at_jul_2459764.82_v01_prelim_V0.2 2022-Dec-14 00:01 2024-Jun-19 21:50 ---------------------------------------- ----------------- -----------------
What I can do is to wait for a new data from Horizons.―― Phoenix7777 (talk) 23:19, 24 July 2022 (UTC)
- There're new datasets at your link now, but they only cover July thru September, which is to say, only about the first half of the transfer trajectory ("finally entering the intended NRHO around the Moon on 13 November", per the CAPSTONE article). So putting work into updating these may not really be worthwhile at this point.
- - 2A02:560:59D8:8400:886A:7AD3:79A:C024 (talk) 15:15, 20 August 2022 (UTC)
- Now Horizons removed the last data (ref_at_jul_2459764.82_v01_prelim_V0.2), so the last available time is 2022-DEC-14 00:01:09.183. Probably (and hopefully) they are working to correct the last data.―― Phoenix7777 (talk)