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
2023-09-15 04:11:46 B 22 28 12.70 -00 43 16.7 X V42
2023-09-15 05:13:43 B 22 28 14.72 -00 43 58.0 X V42
2023-09-16 03:32:33 C 22 29 06.522 -00 58 40.33 V 703
2023-09-16 03:40:10 C 22 29 06.796 -00 58 45.16 V 703
2023-09-16 03:47:46 C 22 29 07.051 -00 58 50.38 V 703
2023-09-16 03:55:23 C 22 29 07.303 -00 58 55.34 V 703
2023-09-16 21:57:55 B 22 29 48.26 -01 10 39.9 X M59
2023-09-16 21:59:59 B 22 29 48.18 -01 10 39.4 X M59
2023-09-16 22:01:31 B 22 29 48.23 -01 10 40.1 X M59
2023-09-17 03:26:52 C 22 30 00.756 -01 13 38.06 V W68
2023-09-17 03:31:24 C 22 30 00.895 -01 13 41.02 V W68
2023-09-17 03:41:18 C 22 30 01.229 -01 13 47.24 V W68
2023-09-17 04:32:19 C 22 30 02.885 -01 14 19.68 V W68
2023-09-17 13:15:21 C 22 30 24.168 -01 19 52.90 V P07
2023-09-17 15:49:52 C 22 30 29.150 -01 21 30.13 V P07
2023-09-17 15:53:06 C 22 30 29.249 -01 21 32.15 V P07
2023-09-17 16:58:50 C 22 30 31.392 -01 22 13.22 V P07
2023-09-17 21:45:50 C 22 30 43.10 -01 25 39.6 X G02
2023-09-17 21:52:38 C 22 30 43.33 -01 25 43.8 X G02
2023-09-17 21:59:03 C 22 30 43.55 -01 25 47.8 X G02
2023-09-18 04:12:38 C 22 30 58.810 -01 29 34.12 V 703
2023-09-18 04:20:49 C 22 30 59.076 -01 29 39.34 V 703
2023-09-18 04:29:01 C 22 30 59.364 -01 29 44.23 V 703
2023-09-18 04:37:12 C 22 30 59.623 -01 29 49.31 V 703
2023-09-18 13:22:31 C 22 31 20.167 -01 34 50.30 V P07
2023-09-18 14:42:43 C 22 31 22.810 -01 35 39.23 V P07
2023-09-18 15:47:45 C 22 31 24.917 -01 36 18.97 V P07
2023-09-18 16:13:25 C 22 31 25.754 -01 36 34.60 V P07
2023-09-18 21:31:55 C 22 31 38.498 -01 39 43.99 V M22
2023-09-18 21:36:31 C 22 31 38.652 -01 39 46.80 V M22
2023-09-18 21:45:04 C 22 31 38.938 -01 39 52.02 V M22
2023-09-18 22:31:12 C 22 31 40.474 -01 40 19.85 V M22
2023-09-19 07:00:46 C 22 32 00.481 -01 45 51.30 V V00
2023-09-19 07:08:43 C 22 32 00.744 -01 45 56.05 V V00
2023-09-19 07:13:22 C 22 32 01.975 -01 45 54.72 X F51
2023-09-19 07:16:38 C 22 32 01.010 -01 46 00.77 V V00
2023-09-19 07:24:34 C 22 32 01.277 -01 46 05.48 V V00
2023-09-19 07:31:59 C 22 32 02.593 -01 46 05.88 X F51
2023-09-19 07:50:31 C 22 32 03.210 -01 46 16.95 X F51
2023-09-19 08:09:00 C 22 32 03.819 -01 46 28.00 X F51
2023-09-20 04:20:42 C 22 32 50.645 -01 58 02.21 V W68
2023-09-20 05:01:13 C 22 32 52.032 -01 58 25.57 V W68
2023-09-20 05:05:46 C 22 32 52.186 -01 58 28.24 V W68
2023-09-20 05:13:35 C 22 32 52.445 -01 58 32.70 V W68
2023-09-21 05:24:05 C 22 33 50.641 -02 12 46.55 V 703
2023-09-21 05:32:15 C 22 33 50.918 -02 12 51.34 V 703
2023-09-21 05:40:25 C 22 33 51.170 -02 12 55.76 V 703
2023-09-21 05:48:36 C 22 33 51.473 -02 13 00.34 V 703
2023-09-23 14:01:13 C 22 36 06.989 -02 43 01.56 V P07
2023-09-23 15:03:25 C 22 36 09.158 -02 43 33.89 V P07