4197 Morpheus (1982 TA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7724910516 ± 1.01e-08
Semi-major axis (a)2.2954661269 AU ± 1.11e-09
Inclination (i)12.60329974° ± 2.88e-06
Long. of Asc. Node (Ω)6.98204038° ± 5.96e-06
Arg. of Perihelion (ω)122.58203482° ± 6.09e-06
Mean Anomaly (M)110.46507819° ± 1.39e-06
Mean Motion (n)0.2834039790°/day ± 2.06e-10
Perihelion dist (q)0.52223908 AU ± 2.32e-08
Aphelion dist (Q)4.06869317 AU ± 2.33e-08
Orbital Period3.47781385 yr ± 2.53e-09
Physical Parameters
H (abs. magnitude)14.97
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.322″
Uncertainty0
Orbit TypeApollo
MOID0.098326 AU
Observations Used1179
Radar Obs Used6
Oppositions30
Arc Total1954-2025
First Observation Used1954-09-03
Last Observation Used2025-06-30
Observations (1276)
Date Type RA Dec Mag Band Observatory
1996-10-04 15:50:30 C 02 11 23.88 +20 23 36.8 z 360
1996-10-04 23:41:40 C 02 11 11.10 +20 38 10.0 z 962
1996-10-04 23:56:25 C 02 11 10.56 +20 38 37.9 z 962
1996-10-05 00:06:08 C 02 11 10.22 +20 38 56.5 z 962
1996-10-05 00:20:17 C 02 11 09.72 +20 39 23.4 z 962
1996-10-05 02:30:29 C 02 11 06.76 +20 43 24.7 z 819
1996-10-05 02:45:29 C 02 11 06.26 +20 43 53.9 z 819
1996-10-05 03:00:30 C 02 11 05.78 +20 44 22.8 z 819
1996-10-05 03:15:29 C 02 11 05.27 +20 44 51.8 z 819
1996-10-05 03:30:29 C 02 11 04.76 +20 45 20.9 z 819
1996-10-06 02:30:29 C 02 10 20.81 +21 31 12.6 z 819
1996-10-06 02:45:29 C 02 10 20.24 +21 31 44.1 z 819
1996-10-06 03:00:30 C 02 10 19.66 +21 32 15.8 z 819
1996-10-06 03:15:29 C 02 10 19.07 +21 32 47.5 z 819
1996-10-06 03:30:29 C 02 10 18.47 +21 33 18.9 z 819
1996-10-06 04:08:30 02 10 17.59 +21 34 39.5 z 710
1996-10-08 08:18:53 C 02 08 06.28 +23 35 51.0 c 608
1996-10-08 08:25:56 C 02 08 04.205 +23 36 04.59 689
1996-10-08 09:22:39 C 02 08 02.61 +23 38 37.5 c 608
1996-10-08 19:09:20 C 02 07 32.55 +24 04 01.9 z 557
1996-10-08 19:45:44 C 02 07 30.49 +24 05 41.2 z 557
1996-10-08 20:46:47 C 02 07 26.95 +24 08 28.2 z 557
1996-10-08 21:35:48 C 02 07 24.03 +24 10 42.4 z 557
1996-10-08 22:18:14 C 02 07 21.46 +24 12 38.7 z 557
1996-10-08 23:03:04 C 02 07 18.69 +24 14 41.6 z 557
1996-10-09 04:15:29 02 07 02.54 +24 29 05.0 z 710
1996-10-09 08:20:43 C 02 06 46.713 +24 40 45.72 689
1996-10-10 08:15:16 C 02 05 15.707 +25 52 30.13 689
1996-10-10 23:15:52 C 02 04 10.75 +26 41 31.8 z 118
1996-10-10 23:19:52 C 02 04 10.43 +26 41 45.4 z 118
1996-10-11 02:30:00 C 02 03 57.13 +26 52 31.9 z 819
1996-10-11 02:44:59 C 02 03 55.88 +26 53 24.0 z 819
1996-10-11 03:00:00 C 02 03 54.64 +26 54 16.6 z 819
1996-10-11 03:15:00 C 02 03 53.35 +26 55 08.8 z 819
1996-10-11 03:29:59 C 02 03 52.04 +26 56 01.1 z 819
1996-10-11 08:09:34 C 02 03 28.666 +27 12 28.25 689
1996-10-11 08:19:58 C 02 03 27.29 +27 13 07.3 i 711
1996-10-11 08:23:53 C 02 03 26.93 +27 13 21.2 i 711
1996-10-11 22:07:03 C 02 02 18.67 +28 03 25.1 12.8 z 124
1996-10-11 22:48:38 C 02 02 14.61 +28 06 03.7 13.0 z 124
1996-10-12 00:06:55 C 02 02 06.83 +28 11 03.1 12.8 z 124
1996-10-12 01:14:45 C 02 01 59.96 +28 15 22.5 13.0 z 124
1996-10-12 02:02:44 C 02 01 55.10 +28 18 26.1 12.9 z 124
1996-10-12 02:30:00 C 02 01 55.15 +28 20 06.3 z 819
1996-10-12 02:30:00 C 02 01 55.03 +28 20 06.6 z 826
1996-10-12 02:44:59 C 02 01 53.54 +28 21 05.6 z 826
1996-10-12 02:45:00 C 02 01 53.66 +28 21 05.1 z 819
1996-10-12 03:00:00 C 02 01 52.03 +28 22 04.5 z 826
1996-10-12 03:15:00 C 02 01 50.58 +28 23 03.1 z 826
1996-10-12 03:15:01 C 02 01 50.67 +28 23 02.7 z 819
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-10-23 07:10:00 488339 5 Hz 8510 -14 -14
1996-10-23 11:10:00 89601609 13 us 8510 -14 -14
1996-10-23.298611 48833900 500 Hz 8510 253 253
1996-10-23.465278 8960160900 13000 us 8510 253 253
1996-10-24 06:50:00 86425022 13 us 8510 -14 -14
1996-10-24 08:30:00 275982 2 Hz 8510 -14 -14
1996-10-24 10:20:00 86017157 13 us 8510 -14 -14
1996-10-24.284722 8642502200 13000 us 8510 253 253
1996-10-24.354167 27598200 200 Hz 8510 253 253
1996-10-24.430556 8601715700 13000 us 8510 253 253
1996-10-28 17:00:00 94450116 13 us 8510 -14 -14
1996-10-28.708333 9445011600 13000 us 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m)