27031 (1998 RO4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4263352489 ± 1.08e-08
Semi-major axis (a)2.1382953708 AU ± 5.86e-10
Inclination (i)5.35636020° ± 9.58e-07
Long. of Asc. Node (Ω)191.76085314° ± 9.41e-06
Arg. of Perihelion (ω)111.91346324° ± 1.02e-05
Mean Anomaly (M)268.64042015° ± 1.21e-06
Mean Motion (n)0.3152177992°/day ± 1.30e-10
Perihelion dist (q)1.22666468 AU ± 2.31e-08
Aphelion dist (Q)3.04992606 AU ± 2.31e-08
Orbital Period3.12681037 yr ± 1.28e-09
Physical Parameters
H (abs. magnitude)17.89
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.190″
Uncertainty0
Orbit TypeAmor
MOID0.230503 AU
Observations Used906
Oppositions50
Arc Total1951-2025
First Observation Used1951-08-26
Last Observation Used2025-01-22
Observations (1000)
Date Type RA Dec Mag Band Observatory
2023-07-08 20:34:58 C 20 54 25.82 +08 14 59.9 Y 557
2023-07-08 21:32:54 C 20 54 30.64 +08 15 36.9 Y 557
2023-07-08 22:33:53 C 20 54 35.65 +08 16 16.0 Y 557
2023-07-08 23:01:43 C 20 54 38.06 +08 16 36.3 X M26
2023-07-08 23:05:30 C 20 54 38.37 +08 16 38.8 X M26
2023-07-08 23:09:17 C 20 54 38.68 +08 16 41.2 X M26
2023-07-08 23:44:00 C 20 54 41.32 +08 17 00.5 Y 557
2023-07-09 00:51:06 C 20 54 46.72 +08 17 43.0 Y 557
2023-07-09 20:50:33 C 20 56 31.43 +08 30 02.3 Y 557
2023-07-09 21:48:29 C 20 56 36.18 +08 30 38.0 Y 557
2023-07-09 22:37:16 C 20 56 40.14 +08 31 07.8 Y 557
2023-07-09 23:17:17 C 20 56 43.27 +08 31 32.5 X G02
2023-07-09 23:24:29 C 20 56 43.84 +08 31 37.1 X G02
2023-07-09 23:31:18 C 20 56 44.39 +08 31 41.1 X G02
2023-07-10 00:47:19 C 20 56 50.55 +08 32 27.0 Y 557
2023-07-10 01:39:10 C 20 56 54.68 +08 32 58.0 Y 557
2023-07-11 23:19:12 C 21 00 49.140 +08 59 54.06 V M22
2023-07-11 23:21:49 C 21 00 49.334 +08 59 55.54 V M22
2023-07-11 23:27:03 C 21 00 49.733 +08 59 58.42 V M22
2023-07-12 00:09:28 C 21 00 52.992 +09 00 21.60 V M22
2023-07-13 06:34:20 C 21 03 26.402 +09 16 22.40 V W68
2023-07-13 06:38:56 C 21 03 26.748 +09 16 24.78 V W68
2023-07-13 06:53:32 C 21 03 27.845 +09 16 32.12 V W68
2023-07-13 07:01:21 C 21 03 28.440 +09 16 36.08 V W68
2023-07-13 10:38:02 C 21 03 47.666 +09 17 57.40 X F52
2023-07-13 10:54:43 C 21 03 48.914 +09 18 05.92 X F52
2023-07-13 11:11:00 C 21 03 50.130 +09 18 14.17 X F52
2023-07-14 06:30:20 C 21 05 27.10 +09 27 30.3 q 463
2023-07-14 06:51:05 C 21 05 28.72 +09 27 40.0 q 463
2023-07-14 20:31:36 C 21 06 37.068 +09 34 00.37 V 073
2023-07-14 20:45:54 C 21 06 38.23 +09 34 04.3 Y 557
2023-07-14 21:29:10 C 21 06 41.590 +09 34 28.16 V 073
2023-07-14 21:40:46 C 21 06 42.55 +09 34 30.1 Y 557
2023-07-14 22:31:23 C 21 06 46.178 +09 34 55.96 V 073
2023-07-14 22:38:42 C 21 06 47.03 +09 34 57.0 Y 557
2023-07-15 00:29:20 C 21 06 55.308 +09 36 31.57 V M22
2023-07-15 00:34:36 C 21 06 55.87 +09 35 50.1 Y 557
2023-07-15 00:38:48 C 21 06 56.018 +09 36 35.60 V M22
2023-07-15 01:17:08 C 21 06 58.850 +09 36 53.35 V M22
2023-07-15 01:35:36 C 21 07 00.51 +09 36 17.5 Y 557
2023-07-15 21:47:49 C 21 08 41.52 +09 45 09.4 V G17
2023-07-15 21:52:54 C 21 08 41.91 +09 45 11.8 V G17
2023-07-15 21:57:59 C 21 08 42.28 +09 45 14.1 V G17
2023-07-15 22:03:04 C 21 08 42.68 +09 45 16.1 V G17
2023-07-15 23:07:11 C 21 08 47.53 +09 45 43.7 X M26
2023-07-15 23:12:35 C 21 08 47.96 +09 45 46.1 X M26
2023-07-15 23:17:58 C 21 08 48.37 +09 45 48.7 X M26
2023-07-16 10:20:40 C 21 09 42.598 +09 50 35.25 X F52
2023-07-16 10:36:16 C 21 09 43.736 +09 50 41.69 X F52
2023-07-16 10:51:54 C 21 09 44.868 +09 50 48.15 X F52