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
2024-07-17 14:46:51 C 02 26 54.636 +13 38 40.78 V T08
2024-07-17 14:47:31 C 02 26 54.727 +13 38 41.35 V T08
2024-07-17 14:51:30 C 02 26 55.054 +13 38 44.38 V T08
2024-07-17 14:59:45 C 02 26 55.812 +13 38 48.70 V T08
2024-07-21 14:11:11 C 02 36 42.713 +14 44 10.18 V T08
2024-07-21 14:35:22 C 02 36 45.209 +14 44 27.49 V T08
2024-07-21 14:47:25 C 02 36 46.519 +14 44 35.70 V T08
2024-07-21 14:57:32 C 02 36 47.592 +14 44 42.50 V T08
2024-07-22 14:23:20 C 02 39 17.731 +15 01 13.37 V T05
2024-07-22 14:29:13 C 02 39 18.401 +15 01 17.90 V T05
2024-07-22 14:40:22 C 02 39 19.529 +15 01 25.50 V T05
2024-07-22 14:59:13 C 02 39 21.550 +15 01 38.64 V T05
2024-07-27 13:57:53 C 02 52 43.550 +16 28 15.96 V T05
2024-07-27 14:32:22 C 02 52 47.551 +16 28 42.49 V T05
2024-07-27 14:37:34 C 02 52 48.098 +16 28 46.13 V T05
2024-07-27 14:48:10 C 02 52 49.378 +16 28 54.01 V T05
2024-07-27 15:01:00 C 02 52 50.875 +16 29 03.77 V T05
2024-08-02 14:19:52 C 03 10 40.565 +18 19 57.90 V T08
2024-08-02 14:44:22 C 03 10 43.752 +18 20 17.52 V T08
2024-08-02 14:52:24 C 03 10 44.815 +18 20 23.96 V T08
2024-08-02 14:57:44 C 03 10 45.470 +18 20 28.28 V T08
2024-08-03 14:31:05 C 03 13 54.118 +18 39 24.55 V T05
2024-08-03 14:35:50 C 03 13 54.770 +18 39 28.26 V T05
2024-08-03 14:46:36 C 03 13 56.196 +18 39 37.08 V T05
2024-08-03 14:58:18 C 03 13 57.751 +18 39 46.51 V T05
2024-08-04 14:26:33 C 03 17 09.792 +18 58 51.24 V T05
2024-08-04 14:27:12 C 03 17 09.845 +18 58 51.67 V T05
2024-08-04 14:31:07 C 03 17 10.406 +18 58 54.88 V T05
2024-08-04 14:36:33 C 03 17 11.143 +18 58 59.02 V T05
2024-08-04 14:41:47 C 03 17 11.813 +18 59 03.59 V T05
2024-08-04 14:42:26 C 03 17 11.933 +18 59 04.27 V T05
2024-08-04 15:01:37 C 03 17 14.556 +18 59 19.21 V T05
2024-08-04 15:04:13 C 03 17 14.904 +18 59 21.95 V T05
2024-08-05 14:34:56 C 03 20 31.512 +19 18 40.75 V T08
2024-08-05 14:54:17 C 03 20 34.214 +19 18 57.10 V T08
2024-08-05 14:58:56 C 03 20 34.850 +19 19 00.70 V T08
2024-08-07 14:12:41 C 03 27 23.290 +19 58 24.67 V T05
2024-08-07 14:18:35 C 03 27 24.163 +19 58 29.57 V T05
2024-08-07 14:55:40 C 03 27 29.554 +19 59 00.96 V T05
2024-08-08 14:19:43 C 03 30 59.086 +20 18 50.22 V T05
2024-08-08 14:28:22 C 03 31 00.374 +20 18 57.71 V T05
2024-08-08 14:48:44 C 03 31 03.406 +20 19 15.13 V T05
2024-08-08 15:03:43 C 03 31 05.652 +20 19 28.06 V T05
2024-08-09 14:27:50 C 03 34 40.270 +20 39 28.73 V T08
2024-08-09 14:33:50 C 03 34 41.194 +20 39 33.98 V T08
2024-08-09 14:36:36 C 03 34 41.618 +20 39 36.43 V T08
2024-08-09 14:41:17 C 03 34 42.334 +20 39 40.50 V T08
2024-08-09 14:42:37 C 03 34 42.530 +20 39 41.83 V T08
2024-08-09 14:51:38 C 03 34 43.925 +20 39 49.46 V T08
2024-08-09 14:57:52 C 03 34 44.873 +20 39 54.61 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)