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
2024-08-09 15:03:13 C 03 34 45.684 +20 40 00.16 V T08
2024-08-10 14:29:26 C 03 38 25.903 +21 00 13.10 V T08
2024-08-10 14:38:27 C 03 38 27.302 +21 00 21.38 V T08
2024-08-10 14:43:06 C 03 38 28.046 +21 00 25.34 V T08
2024-08-10 14:55:45 C 03 38 30.034 +21 00 36.14 V T08
2024-08-12 14:08:17 C 03 46 10.382 +21 41 53.12 V T05
2024-08-12 14:12:52 C 03 46 11.189 +21 41 56.80 V T05
2024-08-12 14:22:01 C 03 46 12.655 +21 42 05.08 V T05
2024-08-12 14:48:59 C 03 46 17.114 +21 42 28.94 V T05
2024-08-13 14:16:48 C 03 50 14.868 +22 03 14.90 V T08
2024-08-13 14:24:32 C 03 50 16.162 +22 03 21.74 V T08
2024-08-13 14:47:28 C 03 50 20.035 +22 03 42.59 V T08
2024-08-13 14:56:20 C 03 50 21.550 +22 03 50.47 V T08
2024-08-14 14:28:03 C 03 54 26.292 +22 24 48.31 V T08
2024-08-14 14:41:26 C 03 54 28.646 +22 25 00.44 V T08
2024-08-14 14:46:46 C 03 54 29.554 +22 25 05.34 V T08
2024-08-14 14:56:49 C 03 54 31.306 +22 25 14.34 V T08
2024-08-15 14:08:54 C 03 58 39.185 +22 46 02.71 V T05
2024-08-15 14:13:29 C 03 58 39.996 +22 46 06.82 V T05
2024-08-15 14:22:49 C 03 58 41.671 +22 46 15.06 V T05
2024-08-15 14:47:27 C 03 58 46.109 +22 46 37.42 V T05
2024-08-16 14:03:58 C 04 03 01.517 +23 07 36.12 V T05
2024-08-16 14:21:16 C 04 03 04.666 +23 07 52.03 V T05
2024-08-16 14:40:48 C 04 03 08.254 +23 08 09.82 V T05
2024-08-16 14:49:55 C 04 03 09.931 +23 08 18.31 V T05
2024-08-18 14:01:57 C 04 12 09.833 +23 51 06.98 V T08
2024-08-18 14:16:11 C 04 12 12.571 +23 51 20.05 V T08
2024-08-18 14:21:31 C 04 12 13.589 +23 51 24.84 V T08
2024-08-18 14:48:39 C 04 12 18.859 +23 51 50.08 V T08
2024-08-19 13:50:59 C 04 16 53.762 +24 12 47.34 V T05
2024-08-19 14:05:09 C 04 16 56.618 +24 13 00.34 V T05
2024-08-19 14:09:43 C 04 16 57.523 +24 13 04.80 V T05
2024-08-19 14:18:12 C 04 16 59.225 +24 13 14.34 V T05
2024-08-19 14:18:51 C 04 16 59.347 +24 13 13.30 V T05
2024-08-19 14:23:26 C 04 17 00.226 +24 13 17.62 V T05
2024-08-19 14:59:34 C 04 17 07.464 +24 13 50.88 V T05
2024-08-20 13:53:34 C 04 21 48.696 +24 34 42.10 V T05
2024-08-20 13:58:08 C 04 21 49.608 +24 34 45.19 V T05
2024-08-20 14:06:03 C 04 21 51.204 +24 34 52.79 V T05
2024-08-21 13:31:53 C 04 26 47.093 +24 56 11.47 V T08
2024-08-21 13:50:03 C 04 26 50.933 +24 56 28.10 V T08
2024-08-21 14:11:08 C 04 26 55.387 +24 56 47.47 V T08
2024-08-21 14:15:57 C 04 26 56.410 +24 56 51.86 V T08
2024-08-24 11:38:45 C 04 42 24.545 +25 59 21.37 V T05
2024-08-24 11:41:59 C 04 42 25.373 +25 59 24.43 V T05
2024-08-24 11:45:51 C 04 42 26.239 +25 59 27.96 V T05
2024-08-24 11:48:52 C 04 42 26.966 +25 59 30.73 V T05
2024-08-24 12:04:11 C 04 42 30.559 +25 59 45.78 V T05
2024-08-28 14:05:38 C 05 06 45.154 +27 24 29.59 V T08
2024-08-28 14:20:05 C 05 06 48.900 +27 24 41.62 V T08
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)