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
2017-09-11 15:23:56 C 04 48 24.19 +27 57 49.6 L T05
2017-09-13 09:14:41 S 05 00 00.538 +28 48 46.58 L C51
2017-09-16 02:09:54 C 05 19 54.12 +30 06 29.6 q 089
2017-09-16 02:12:46 C 05 19 55.16 +30 06 33.2 q 089
2017-09-16 02:15:37 C 05 19 56.02 +30 06 36.4 q 089
2017-09-16 02:18:28 C 05 19 56.86 +30 06 39.8 q 089
2017-09-16 09:31:07 S 05 22 17.551 +30 15 09.29 L C51
2017-09-16 12:39:37 S 05 23 19.798 +30 18 48.28 L C51
2017-09-16 15:48:07 S 05 24 22.390 +30 22 26.54 L C51
2017-09-16 18:56:38 S 05 25 25.32 +30 26 04.2 L C51
2017-09-16 20:30:52 S 05 25 56.94 +30 27 52.8 L C51
2017-09-16 22:05:07 S 05 26 28.63 +30 29 40.9 L C51
2017-09-16 23:39:22 S 05 27 00.41 +30 31 29.0 L C51
2017-09-17 01:13:38 S 05 27 32.31 +30 33 16.9 L C51
2017-09-17 02:47:53 S 05 28 04.272 +30 35 04.52 L C51
2017-09-17 02:48:04 S 05 28 04.337 +30 35 05.10 L C51
2017-09-17 05:56:34 S 05 29 08.558 +30 38 39.66 L C51
2017-09-17 09:05:04 S 05 30 13.135 +30 42 13.54 L C51
2017-09-17 12:13:34 S 05 31 18.086 +30 45 46.22 L C51
2017-09-17 18:30:34 S 05 33 29.105 +30 52 49.01 L C51
2017-09-30 10:40:59 C 07 47 58.23 +33 28 33.7 q 703
2017-09-30 10:48:17 C 07 48 01.97 +33 28 30.7 q 703
2017-09-30 10:55:36 C 07 48 05.67 +33 28 27.2 q 703
2017-09-30 11:02:55 C 07 48 09.42 +33 28 25.5 q 703
2017-10-03 02:32:40 C 08 20 53.96 +32 43 12.1 q 089
2017-10-03 02:35:31 C 08 20 55.43 +32 43 09.5 q 089
2017-10-03 02:38:22 C 08 20 56.88 +32 43 06.9 q 089
2017-10-03 10:03:22 C 08 24 46.82 +32 35 40.3 q 703
2017-10-03 10:10:38 C 08 24 50.51 +32 35 32.5 q 703
2017-10-03 10:17:54 C 08 24 54.22 +32 35 25.2 q 703
2017-10-03 10:25:09 C 08 24 57.96 +32 35 17.8 q 703
2017-10-07 03:47:10 C 09 10 03.10 +30 31 35.1 q 160
2017-10-07 03:49:11 C 09 10 04.04 +30 31 31.8 q 160
2017-10-07 03:51:06 C 09 10 04.98 +30 31 28.2 q 160
2017-10-09 03:18:34 C 09 32 46.11 +29 03 34.9 q 160
2017-10-09 03:20:35 C 09 32 47.04 +29 03 31.5 q 160
2017-10-09 03:22:30 C 09 32 47.96 +29 03 27.4 q 160
2018-05-12 13:32:23 C 20 04 07.69 -37 31 47.5 U T05
2018-05-12 13:52:51 C 20 04 07.19 -37 31 54.2 U T05
2018-05-12 13:54:49 C 20 04 07.11 -37 31 54.3 U T05
2018-05-12 13:57:27 C 20 04 07.10 -37 31 55.7 U T05
2018-05-12 14:08:00 C 20 04 06.88 -37 31 58.0 U T05
2018-05-12 14:11:57 C 20 04 06.78 -37 32 00.3 U T05
2018-05-12 14:12:36 C 20 04 06.79 -37 31 59.6 U T05
2018-06-14 11:50:28 C 19 24 53.45 -41 34 47.8 U T08
2018-06-14 11:53:46 C 19 24 53.30 -41 34 48.1 U T08
2018-06-14 11:59:45 C 19 24 52.83 -41 34 49.5 U T08
2018-06-14 12:09:32 C 19 24 52.17 -41 34 51.3 U T05
2018-06-14 12:13:01 C 19 24 51.86 -41 34 51.4 U T08
2018-06-14 12:23:45 C 19 24 51.05 -41 34 54.7 U 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)