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
2021-07-29 21:42:21 C 13 16 07.42 -21 55 15.4 q Y00
2021-07-29 21:56:44 C 13 16 09.50 -21 55 26.4 q Y00
2021-07-29 22:11:35 C 13 16 11.58 -21 55 37.3 q Y00
2021-08-01 05:53:27 C 13 23 58.15 -22 36 24.9 V T08
2021-08-01 05:58:05 C 13 23 58.78 -22 36 28.0 V T08
2021-08-01 06:09:22 C 13 24 00.33 -22 36 35.8 V T08
2021-08-01 06:26:38 C 13 24 02.65 -22 36 48.1 V T08
2021-08-09 06:02:50 C 13 49 07.74 -24 37 35.7 V T08
2021-08-09 06:07:28 C 13 49 08.31 -24 37 38.4 V T08
2021-08-09 06:18:05 C 13 49 09.63 -24 37 44.0 V T08
2021-08-09 06:34:02 C 13 49 11.58 -24 37 52.5 V T08
2022-07-30 09:06:02 C 20 06 48.954 -36 25 10.19 U F52
2022-07-30 09:18:51 C 20 06 48.290 -36 25 11.07 U F52
2022-07-30 09:31:40 C 20 06 47.625 -36 25 12.08 U F52
2022-07-30 09:44:30 C 20 06 46.969 -36 25 12.97 U F52
2022-08-19 06:21:20 C 19 45 08.632 -36 27 03.72 U F52
2022-08-19 06:25:53 C 19 45 08.454 -36 27 03.61 U F52
2022-08-19 06:39:30 C 19 45 07.921 -36 27 02.84 U F52
2022-08-19 06:48:39 C 19 45 07.579 -36 27 02.55 U F52
2022-08-19 06:53:12 C 19 45 07.394 -36 27 02.19 U F52
2022-08-19 07:02:20 C 19 45 07.043 -36 27 01.67 U F52
2022-08-19 07:06:54 C 19 45 06.845 -36 27 01.55 U F52
2023-07-25 11:06:24 C 22 15 43.656 -23 48 08.57 X F51
2023-07-25 11:22:07 C 22 15 43.077 -23 48 12.35 X F51
2023-07-25 11:37:52 C 22 15 42.531 -23 48 16.02 X F51
2023-08-19 09:03:20 C 21 50 37.708 -25 59 07.43 X F52
2023-08-19 09:19:04 C 21 50 36.960 -25 59 10.28 X F52
2023-08-19 09:34:47 C 21 50 36.216 -25 59 13.23 X F52
2023-08-19 09:50:28 C 21 50 35.485 -25 59 16.04 X F52
2023-09-08 08:32:57 C 21 29 02.069 -27 01 48.36 X F51
2023-09-08 08:48:09 C 21 29 01.424 -27 01 49.47 X F51
2023-09-08 09:03:19 C 21 29 00.775 -27 01 50.56 X F51
2023-09-08 09:18:30 C 21 29 00.134 -27 01 51.64 X F51
2023-10-07 05:31:27 C 21 07 47.372 -26 56 18.18 X F51
2023-10-07 05:46:25 C 21 07 47.107 -26 56 16.88 X F51
2023-10-07 06:01:23 C 21 07 46.826 -26 56 15.75 X F51
2023-10-07 06:16:54 C 21 07 46.536 -26 56 14.49 X F51
2024-07-08 08:29:55 C 02 06 03.391 +11 15 41.58 V W68
2024-07-08 08:50:00 C 02 06 05.057 +11 15 54.79 V W68
2024-07-08 08:54:34 C 02 06 05.510 +11 15 58.39 V W68
2024-07-08 09:14:54 C 02 06 07.327 +11 16 10.78 V W68
2024-07-12 09:00:06 C 02 14 48.530 +12 16 18.08 V W68
2024-07-12 09:04:39 C 02 14 48.950 +12 16 20.96 V W68
2024-07-12 09:20:01 C 02 14 50.350 +12 16 30.50 V W68
2024-07-12 09:29:09 C 02 14 51.209 +12 16 36.77 V W68
2024-07-17 13:49:08 C 02 26 48.890 +13 38 01.32 V T05
2024-07-17 13:53:42 C 02 26 49.430 +13 38 04.20 V T05
2024-07-17 14:03:15 C 02 26 50.362 +13 38 11.87 V T05
2024-07-17 14:22:43 C 02 26 52.226 +13 38 24.58 V T08
2024-07-17 14:31:12 C 02 26 53.078 +13 38 30.34 V T05
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)