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
2023-06-28 00:35:50 C 20 31 16.98 +04 59 05.0 X C95
2023-06-28 00:39:01 C 20 31 17.25 +04 59 08.1 X C95
2023-06-28 06:46:37 C 20 31 51.06 +05 04 22.2 q 463
2023-06-28 06:58:19 C 20 31 52.05 +05 04 32.3 q 463
2023-06-28 07:14:34 C 20 31 53.01 +05 04 41.8 q 463
2023-06-29 08:19:32 C 20 34 09.571 +05 25 51.53 V U52
2023-06-29 08:22:39 C 20 34 09.847 +05 25 54.16 V U52
2023-06-30 00:31:03 B 20 35 36.49 +05 39 14.0 Z M45
2023-06-30 00:36:06 B 20 35 36.92 +05 39 18.2 Z M45
2023-06-30 22:41:26 B 20 37 36.96 +05 57 16.6 Z M45
2023-06-30 22:44:40 B 20 37 37.23 +05 57 19.6 Z M45
2023-06-30 22:47:52 B 20 37 37.52 +05 57 22.1 Z M45
2023-07-01 05:44:47 C 20 38 14.890 +06 03 34.85 V W68
2023-07-01 05:46:44 C 20 38 15.060 +06 03 36.54 V W68
2023-07-01 05:53:59 C 20 38 15.658 +06 03 41.98 V W68
2023-07-01 06:08:32 C 20 38 17.921 +06 03 17.10 V U52
2023-07-01 06:11:39 C 20 38 18.158 +06 03 19.01 V U52
2023-07-01 06:14:42 C 20 38 17.362 +06 03 58.68 V W68
2023-07-02 22:59:53 C 20 41 56.918 +06 35 58.85 V M22
2023-07-02 23:04:31 C 20 41 57.314 +06 36 02.81 V M22
2023-07-02 23:33:18 C 20 41 59.674 +06 36 24.84 V M22
2023-07-02 23:37:24 C 20 42 00.014 +06 36 28.22 V M22
2023-07-03 23:03:14 B 20 44 05.34 +06 53 35.5 Z M45
2023-07-03 23:07:49 B 20 44 05.70 +06 53 38.8 Z M45
2023-07-03 23:11:27 B 20 44 06.01 +06 53 41.4 Z M45
2023-07-04 05:14:43 C 20 44 38.580 +06 58 49.87 V W68
2023-07-04 05:18:37 C 20 44 38.892 +06 58 53.11 V W68
2023-07-04 05:30:40 C 20 44 39.881 +06 59 02.47 V W68
2023-07-04 05:51:58 B 20 44 42.63 +06 58 46.4 V25
2023-07-04 06:15:38 B 20 44 44.54 +06 59 03.0 V25
2023-07-04 06:50:33 B 20 44 47.43 +06 59 29.3 V25
2023-07-07 06:50:23 C 20 51 07.253 +07 51 02.92 V W68
2023-07-07 06:57:37 C 20 51 07.846 +07 51 07.13 V W68
2023-07-07 07:02:16 C 20 51 08.239 +07 51 10.33 V W68
2023-07-07 07:46:17 C 20 51 11.734 +07 51 39.82 V W68
2023-07-07 21:00:10 C 20 52 22.80 +07 59 45.9 Y 557
2023-07-07 22:00:08 C 20 52 27.80 +08 00 25.9 Y 557
2023-07-07 22:07:39 C 20 52 28.39 +08 00 31.4 V M34
2023-07-07 22:09:44 C 20 52 28.56 +08 00 33.0 V M34
2023-07-07 22:12:52 C 20 52 28.82 +08 00 35.1 V M34
2023-07-07 22:59:25 C 20 52 32.66 +08 01 05.3 Y 557
2023-07-07 23:28:21 C 20 52 34.93 +08 01 24.8 X G02
2023-07-07 23:33:57 C 20 52 35.39 +08 01 28.4 X G02
2023-07-07 23:39:18 C 20 52 35.83 +08 01 32.0 X G02
2023-07-08 00:00:23 C 20 52 37.63 +08 01 45.6 Y 557
2023-07-08 01:04:26 C 20 52 42.81 +08 02 27.4 Y 557
2023-07-08 10:54:53 C 20 53 33.457 +08 08 58.52 V G96
2023-07-08 11:01:02 C 20 53 33.943 +08 09 02.56 V G96
2023-07-08 11:07:11 C 20 53 34.433 +08 09 06.48 V G96
2023-07-08 11:16:57 C 20 53 35.218 +08 09 12.67 V G96