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
1996-08-12 12:43:42 C 01 47 44.46 +06 55 12.6 c 608
1996-09-14 00:31:00 C 02 11 03.08 +12 08 06.1 z 130
1996-09-14 01:39:59 C 02 11 04.08 +12 08 45.9 z 130
1996-09-16 14:31:31 C 02 12 03.53 +12 45 19.5 381
1996-09-16 14:42:25 C 02 12 03.67 +12 45 26.5 381
1996-09-16 14:53:25 C 02 12 03.80 +12 45 33.5 381
1996-09-19 21:51:16 C 02 13 03.14 +13 38 53.7 z 113
1996-09-19 22:14:36 C 02 13 03.32 +13 39 10.0 z 557
1996-09-19 22:30:11 C 02 13 03.46 +13 39 21.8 z 113
1996-09-19 23:12:36 C 02 13 03.78 +13 39 52.6 z 557
1996-09-21 22:58:54 C 02 13 28.55 +14 16 21.9 z 121
1996-09-22 00:01:11 C 02 13 28.79 +14 17 12.0 z 121
1996-09-22 00:39:42 C 02 13 28.93 +14 17 42.6 z 121
1996-09-23 09:30:30 C 02 13 40.905 +14 45 07.48 689
1996-09-25 09:22:47 C 02 13 49.564 +15 28 44.72 689
1996-09-27 09:14:53 C 02 13 46.853 +16 17 39.45 689
1996-09-28 09:10:51 C 02 13 40.669 +16 44 26.76 689
1996-10-01 08:58:22 C 02 12 59.306 +18 16 20.66 689
1996-10-02 08:54:03 C 02 12 36.599 +18 51 35.12 689
1996-10-03 21:44:00 02 11 52.19 +19 51 15.9 13.5 m 026
1996-10-03 21:48:56 C 02 11 51.82 +19 51 40.0 z 108
1996-10-03 21:57:16 C 02 11 51.61 +19 51 53.9 z 108
1996-10-03 23:21:39 C 02 11 49.50 +19 54 07.2 13.9 z 124
1996-10-03 23:23:49 C 02 11 49.43 +19 54 11.1 13.9 z 124
1996-10-03 23:25:58 C 02 11 49.39 +19 54 14.2 13.7 z 124
1996-10-03 23:28:07 C 02 11 49.31 +19 54 18.1 13.9 z 124
1996-10-03 23:30:16 C 02 11 49.25 +19 54 21.6 13.9 z 124
1996-10-03 23:32:25 C 02 11 49.18 +19 54 25.8 13.8 z 124
1996-10-03 23:34:34 C 02 11 49.05 +19 54 29.1 13.9 z 124
1996-10-03 23:36:43 C 02 11 49.02 +19 54 32.8 13.9 z 124
1996-10-03 23:38:52 C 02 11 48.98 +19 54 38.3 14.1 z 124
1996-10-03 23:41:01 C 02 11 48.96 +19 54 41.8 14.1 z 124
1996-10-03 23:43:10 C 02 11 48.79 +19 54 43.0 13.8 z 124
1996-10-03 23:45:19 C 02 11 48.76 +19 54 48.0 14.0 z 124
1996-10-03 23:47:28 C 02 11 48.76 +19 54 52.1 14.2 z 124
1996-10-03 23:49:37 C 02 11 48.63 +19 54 55.8 14.0 z 124
1996-10-03 23:51:46 C 02 11 48.57 +19 54 59.4 14.0 z 124
1996-10-03 23:53:55 C 02 11 48.54 +19 55 02.5 14.1 z 124
1996-10-03 23:56:04 C 02 11 48.48 +19 55 07.2 14.2 z 124
1996-10-03 23:58:13 C 02 11 48.40 +19 55 11.8 14.0 z 124
1996-10-04 00:00:22 C 02 11 48.32 +19 55 15.3 14.0 z 124
1996-10-04 00:02:31 C 02 11 48.30 +19 55 18.5 14.1 z 124
1996-10-04 00:04:40 C 02 11 48.27 +19 55 22.7 14.1 z 124
1996-10-04 00:13:21 C 02 11 47.66 +19 55 35.9 z 113
1996-10-04 00:34:37 C 02 11 47.05 +19 56 13.3 z 113
1996-10-04 00:46:28 C 02 11 46.70 +19 56 34.0 z 113
1996-10-04 03:00:00 C 02 11 42.75 +20 00 25.3 z 046
1996-10-04 03:01:41 C 02 11 42.69 +20 00 28.1 z 046
1996-10-04 03:03:34 C 02 11 42.65 +20 00 31.5 z 046
1996-10-04 15:45:59 C 02 11 24.04 +20 23 28.6 z 360
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)