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
2024-10-01 11:36:35 C 09 53 09.154 +22 42 46.55 V 703
2024-10-01 11:40:06 C 09 53 10.342 +22 42 40.39 V 703
2024-10-01 11:43:39 C 09 53 11.533 +22 42 33.80 V 703
2025-05-25 00:34:00 C 20 04 22.106 -38 11 24.54 V M22
2025-05-25 00:42:22 C 20 04 21.893 -38 11 27.17 V M22
2025-05-25 00:47:34 C 20 04 21.643 -38 11 28.75 V M22
2025-05-25 00:50:11 C 20 04 21.490 -38 11 29.62 V M22
2025-05-25 00:56:04 C 20 04 21.334 -38 11 31.81 V M22
2025-05-25 01:03:53 C 20 04 21.024 -38 11 33.43 V M22
2025-05-29 12:40:09 C 19 59 58.791 -38 45 26.65 X F51
2025-05-29 12:52:19 C 19 59 58.238 -38 45 30.52 X F51
2025-05-29 13:04:30 C 19 59 57.682 -38 45 34.29 X F51
2025-05-29 13:16:38 C 19 59 57.120 -38 45 38.02 X F51
2025-05-31 23:37:24 C 19 57 15.444 -39 03 37.73 V M22
2025-05-31 23:42:00 C 19 57 15.206 -39 03 39.31 V M22
2025-05-31 23:48:01 C 19 57 15.034 -39 03 41.90 V M22
2025-06-01 00:11:08 C 19 57 13.814 -39 03 48.35 V M22
2025-06-28 02:50:02 C 19 15 18.564 -41 30 59.08 V W68
2025-06-28 03:00:12 C 19 15 17.887 -41 30 59.11 V W68
2025-06-28 03:08:27 C 19 15 17.172 -41 31 00.55 V W68
2025-06-28 03:19:11 C 19 15 16.397 -41 31 02.35 V W68
2025-06-28 03:25:07 C 19 15 15.775 -41 31 02.14 V W68
2025-06-30 04:29:11 C 19 11 37.231 -41 35 42.76 V W68
2025-06-30 04:33:15 C 19 11 36.941 -41 35 43.87 V W68
2025-06-30 04:37:11 C 19 11 36.689 -41 35 43.44 V W68
2025-06-30 04:51:00 C 19 11 35.544 -41 35 44.59 V W68
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)