Spahr (242P)

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2019-10-12 (JD 2458768.5)
Eccentricity (e)0.2777765952 ± 5.94e-08
Semi-major axis (a)5.4754348519 AU ± 5.56e-08
Inclination (i)32.48011516° ± 5.21e-06
Long. of Asc. Node (Ω)180.53322059° ± 1.36e-05
Arg. of Perihelion (ω)246.35253171° ± 4.64e-05
Mean Anomaly (M)212.73014122° ± 2.64e-05
Mean Motion (n)0.0769279842°/day ± 1.17e-09
Perihelion dist (q)3.95448720 AU ± 3.28e-07
Aphelion dist (Q)6.99638250 AU ± 3.33e-07
Orbital Period12.81232433 yr ± 1.95e-07
NGA Modelg(r)
A2-2.34069756e-06 ± 1.85e-07 AU/d²
Orbit Solution
SourceIAA
Solution Date2026-06-03
RMS Residual0.664″
Uncertainty0
Orbit TypeJupiter Trojan
MOID3.111451 AU
Observations Used1515
Oppositions27
Arc Total1997-2026
First Observation Used1997-10-29
Last Observation Used2026-04-07
Observations (1568)
Date Type RA Dec Mag Band Observatory
2024-10-28 05:36:18 C 04 17 27.098 -13 31 45.80 – V W68
2024-10-30 14:10:48 C 04 16 32.51 -13 51 09.1 – q D95
2024-10-30 14:20:04 C 04 16 32.18 -13 51 12.3 – q D95
2024-10-30 16:06:27 C 04 16 30.36 -13 51 48.3 – m 349
2024-10-30 16:31:49 C 04 16 29.89 -13 51 57.2 – m 349
2024-10-31 15:00:25 C 04 16 06.99 -13 59 22.9 – X 323
2024-10-31 15:06:33 C 04 16 06.98 -13 59 25.5 – X 323
2024-10-31 15:12:41 C 04 16 06.82 -13 59 27.6 – X 323
2024-10-31 17:13:35 C 04 16 04.71 -14 00 10.8 – u N56
2024-10-31 17:15:43 C 04 16 04.62 -14 00 10.4 – u N56
2024-10-31 17:31:47 C 04 16 04.34 -14 00 13.8 – V Q62
2024-10-31 17:32:43 C 04 16 04.39 -14 00 16.4 – u N56
2024-10-31 17:34:50 C 04 16 04.30 -14 00 16.7 – u N56
2024-10-31 17:35:29 C 04 16 04.24 -14 00 15.3 – V Q62
2024-10-31 17:51:50 C 04 16 04.10 -14 00 24.0 – u N56
2024-10-31 17:53:57 C 04 16 03.97 -14 00 24.1 – u N56
2024-10-31 18:10:55 C 04 16 03.70 -14 00 30.6 – u N56
2024-10-31 18:13:02 C 04 16 03.67 -14 00 30.3 – u N56
2024-11-02 15:48:15 C 04 15 15.046 -14 15 16.02 – V E62
2024-11-02 16:03:02 C 04 15 14.743 -14 15 20.34 – V E62
2024-11-03 14:34:42 C 04 14 49.99 -14 22 32.2 – V 900
2024-11-03 14:44:48 C 04 14 49.82 -14 22 35.4 – V 900
2024-11-04 00:45:23 B 04 14 38.46 -14 25 43.7 – X G00
2024-11-04 00:53:09 B 04 14 38.31 -14 25 46.0 – X G00
2024-11-04 01:00:22 B 04 14 38.15 -14 25 47.8 – X G00
2024-11-04 05:12:19 C 04 14 33.449 -14 27 03.17 – V W68
2024-11-04 05:14:55 C 04 14 33.408 -14 27 03.89 – V W68
2024-11-04 05:18:52 C 04 14 33.338 -14 27 05.54 – V W68
2024-11-04 05:46:07 C 04 14 32.791 -14 27 13.68 – V W68
2024-11-06 15:20:06 C 04 13 25.85 -14 44 42.9 – q Q11
2024-11-06 15:32:26 C 04 13 25.61 -14 44 46.4 – q Q11
2024-11-06 15:44:47 C 04 13 25.34 -14 44 50.1 – q Q11
2024-11-07 05:00:11 C 04 13 09.530 -14 48 40.39 – V W68
2024-11-07 05:02:48 C 04 13 09.468 -14 48 41.22 – V W68
2024-11-07 05:07:22 C 04 13 09.370 -14 48 43.06 – V W68
2024-11-07 05:15:13 C 04 13 09.170 -14 48 45.68 – V W68
2024-11-08 04:40:05 C 04 12 40.766 -14 55 30.25 – V W68
2024-11-08 04:42:43 C 04 12 40.718 -14 55 30.94 – V W68
2024-11-08 05:18:41 C 04 12 39.984 -14 55 41.12 – V W68
2024-11-08 05:45:36 C 04 12 39.403 -14 55 48.94 – V W68
2024-11-08 09:46:32 C 04 12 34.420 -14 57 00.00 – V G96
2024-11-08 09:54:00 C 04 12 34.240 -14 57 02.05 – V G96
2024-11-08 10:01:29 C 04 12 34.103 -14 57 04.21 – V G96
2024-11-08 10:08:57 C 04 12 33.944 -14 57 06.16 – V G96
2024-11-09 18:10:16 C 04 11 54.19 -15 06 00.5 – X 323
2024-11-09 19:20:58 C 04 11 52.62 -15 06 19.6 – X 323
2024-11-09 19:27:06 C 04 11 52.49 -15 06 21.1 – X 323
2024-11-10 10:22:43 C 04 11 33.811 -15 10 26.15 – V T05
2024-11-10 10:25:58 C 04 11 33.710 -15 10 27.12 – V T05
2024-11-10 10:31:11 C 04 11 33.622 -15 10 28.78 – V T05