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
2024-08-28 14:24:49 C 05 06 50.129 +27 24 45.65 V T08
2024-08-28 14:47:30 C 05 06 56.026 +27 25 04.62 V T08
2024-08-30 12:33:39 C 05 19 18.506 +28 01 52.75 V T08
2024-08-30 12:41:22 C 05 19 20.628 +28 01 58.94 V T08
2024-08-30 12:46:19 C 05 19 21.998 +28 02 02.80 V T08
2024-08-30 13:21:59 C 05 19 31.848 +28 02 31.06 V T08
2024-09-01 14:27:58 C 05 33 35.316 +28 39 04.64 V T05
2024-09-01 14:33:24 C 05 33 36.907 +28 39 08.53 V T05
2024-09-01 14:54:59 C 05 33 43.212 +28 39 24.12 V T05
2024-09-01 15:05:29 C 05 33 46.282 +28 39 31.64 V T05
2024-09-03 14:27:57 C 05 48 07.586 +29 11 00.17 V T08
2024-09-03 14:54:57 C 05 48 15.917 +29 11 17.05 V T08
2024-09-03 15:09:55 C 05 48 20.520 +29 11 26.74 V T08
2024-09-03 15:18:50 C 05 48 23.280 +29 11 31.96 V T08
2024-09-04 14:05:32 C 05 55 34.291 +29 25 01.27 V T05
2024-09-04 14:10:05 C 05 55 35.753 +29 25 04.04 V T05
2024-09-04 14:18:41 C 05 55 38.460 +29 25 09.12 V T05
2024-09-07 10:06:42 C 06 18 02.61 +29 57 45.4 q U55
2024-09-07 10:20:49 C 06 18 07.47 +29 57 50.7 q U55
2024-09-07 10:35:21 C 06 18 12.37 +29 57 57.4 q U55
2024-09-09 10:28:57 C 06 34 55.009 +30 13 03.61 V 703
2024-09-09 10:35:37 C 06 34 57.306 +30 13 06.67 V 703
2024-09-09 10:38:57 C 06 34 58.616 +30 13 08.26 V 703
2024-09-09 14:07:26 C 06 36 12.840 +30 13 57.14 V T05
2024-09-09 14:12:00 C 06 36 14.453 +30 13 58.33 V T05
2024-09-09 14:22:32 C 06 36 18.204 +30 14 00.82 V T05
2024-09-09 14:48:08 C 06 36 27.281 +30 14 07.01 V T05
2024-09-10 14:23:56 C 06 44 57.586 +30 18 21.82 V T08
2024-09-10 14:49:05 C 06 45 06.655 +30 18 25.67 V T08
2024-09-10 15:11:18 C 06 45 14.676 +30 18 28.80 V T08
2024-09-12 14:27:23 C 07 02 42.787 +30 20 35.16 V T05
2024-09-12 14:38:54 C 07 02 47.074 +30 20 34.84 V T05
2024-09-12 14:55:28 C 07 02 53.246 +30 20 34.26 V T05
2024-09-12 15:00:04 C 07 02 54.955 +30 20 34.08 V T05
2024-09-14 14:03:44 C 07 20 46.666 +30 13 34.14 V T08
2024-09-14 14:09:05 C 07 20 48.689 +30 13 33.10 V T08
2024-09-14 14:29:58 C 07 20 56.674 +30 13 28.34 V T08
2024-09-14 14:50:14 C 07 21 04.382 +30 13 23.41 V T08
2024-09-16 11:07:29 C 07 38 11.11 +29 57 47.4 q U55
2024-09-16 11:16:23 C 07 38 14.67 +29 57 43.0 q U55
2024-09-16 11:25:18 C 07 38 18.23 +29 57 38.4 q U55
2024-09-19 13:43:37 C 08 07 20.114 +29 11 39.62 V T08
2024-09-19 13:47:37 C 08 07 21.689 +29 11 35.92 V T08
2024-09-19 13:56:17 C 08 07 25.090 +29 11 29.47 V T08
2024-09-19 14:13:00 C 08 07 31.606 +29 11 16.48 V T08
2024-09-20 11:21:03 C 08 15 46.908 +28 53 29.62 V 703
2024-09-20 11:24:21 C 08 15 48.193 +28 53 26.66 V 703
2024-09-20 11:27:40 C 08 15 49.471 +28 53 23.68 V 703
2024-09-20 11:30:58 C 08 15 50.756 +28 53 20.69 V 703
2024-10-01 11:33:03 C 09 53 07.969 +22 42 52.92 V 703
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)