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
2023-08-16 03:01:17 C 21 58 31.94 +08 13 45.5 q X33
2023-08-16 07:07:47 C 21 58 43.95 +08 10 43.4 q U55
2023-08-16 07:16:28 C 21 58 44.31 +08 10 38.2 q U55
2023-08-16 07:29:28 C 21 58 44.84 +08 10 30.0 q U55
2023-08-16 21:30:32 C 21 59 26.75 +08 01 40.8 V G17
2023-08-16 21:37:39 C 21 59 27.07 +08 01 36.3 V G17
2023-08-16 21:44:46 C 21 59 27.36 +08 01 31.7 V G17
2023-08-19 22:12:55 C 22 02 54.13 +07 12 57.3 X G02
2023-08-19 22:20:28 C 22 02 54.43 +07 12 51.9 X G02
2023-08-19 22:27:35 C 22 02 54.71 +07 12 47.0 X G02
2023-08-20 07:42:10 C 22 03 21.592 +07 06 30.86 X F51
2023-08-20 07:58:58 C 22 03 22.252 +07 06 19.16 X F51
2023-08-20 08:15:45 C 22 03 22.904 +07 06 07.55 X F51
2023-08-20 22:01:28 C 22 04 00.12 +06 56 05.8 V G33
2023-08-20 22:04:50 C 22 04 00.24 +06 56 03.5 V G33
2023-08-20 22:08:12 C 22 04 00.39 +06 56 01.0 V G33
2023-08-21 03:29:24 C 22 04 15.97 +06 52 17.2 X 858
2023-08-21 03:51:46 C 22 04 16.88 +06 52 01.4 X 858
2023-08-21 04:14:07 C 22 04 17.79 +06 51 45.5 X 858
2023-08-21 09:08:34 C 22 04 30.604 +06 48 21.40 X F51
2023-08-21 09:37:21 C 22 04 31.657 +06 48 00.75 X F51
2023-08-21 09:56:34 C 22 04 32.358 +06 47 46.90 X F51
2023-08-21 10:15:52 C 22 04 33.057 +06 47 33.00 X F51
2023-08-22 02:32:13 C 22 05 17.66 +06 35 54.7 q X33
2023-08-22 02:36:38 C 22 05 17.79 +06 35 52.3 q X33
2023-08-22 02:40:44 C 22 05 17.94 +06 35 48.7 q X33
2023-08-22 21:07:25 C 22 06 07.26 +06 21 46.2 V G17
2023-08-22 21:12:30 C 22 06 07.46 +06 21 42.3 V G17
2023-08-22 21:17:36 C 22 06 07.65 +06 21 38.7 V G17
2023-08-24 03:55:05 C 22 07 27.667 +05 59 17.38 V W68
2023-08-24 03:59:38 C 22 07 27.840 +05 59 13.78 V W68
2023-08-24 04:03:33 C 22 07 27.970 +05 59 11.00 V W68
2023-08-24 04:10:42 C 22 07 28.229 +05 59 05.53 V W68
2023-08-28 21:17:05 C 22 12 13.694 +04 31 07.64 V M22
2023-08-28 21:21:00 C 22 12 13.819 +04 31 04.37 V M22
2023-08-28 21:25:35 C 22 12 13.985 +04 31 00.88 V M22
2023-08-28 21:33:27 C 22 12 14.239 +04 30 54.65 V M22
2023-09-03 03:06:33 C 22 17 13.59 +02 51 05.9 q X33
2023-09-03 03:10:38 C 22 17 13.80 +02 51 02.7 q X33
2023-09-03 03:14:28 C 22 17 13.81 +02 50 57.6 q X33
2023-09-04 13:47:59 C 22 18 34.639 +02 23 56.18 V P07
2023-09-04 14:38:55 B 22 18 36.59 +02 22 51.7 Z O46
2023-09-04 14:41:21 B 22 18 36.66 +02 22 49.8 Z O46
2023-09-04 14:43:32 B 22 18 36.73 +02 22 48.2 Z O46
2023-09-04 14:45:46 B 22 18 36.81 +02 22 46.3 Z O46
2023-09-04 14:47:58 B 22 18 36.88 +02 22 44.6 Z O46
2023-09-04 14:50:15 B 22 18 36.94 +02 22 42.8 Z O46
2023-09-04 14:57:49 B 22 18 37.18 +02 22 37.0 Z O46
2023-09-04 15:03:00 B 22 18 37.35 +02 22 32.8 Z O46
2023-09-04 15:08:10 B 22 18 37.51 +02 22 28.8 Z O46