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
2023-10-14 02:49:08 C 22 58 03.946 -05 23 00.53 V W68
2023-10-14 02:53:47 C 22 58 04.193 -05 23 01.39 V W68
2023-10-14 03:54:05 C 22 58 06.886 -05 23 09.85 V W68
2023-10-15 04:27:10 C 22 59 19.734 -05 26 41.39 V 703
2023-10-15 04:34:50 C 22 59 20.076 -05 26 42.32 V 703
2023-10-15 04:42:31 C 22 59 20.454 -05 26 42.94 V 703
2023-10-15 04:50:11 C 22 59 20.753 -05 26 45.02 V 703
2023-10-15 21:52:57 C 23 00 10.990 -05 28 28.67 V M22
2023-10-15 21:57:32 C 23 00 11.206 -05 28 29.28 V M22
2023-10-15 22:13:36 C 23 00 11.954 -05 28 31.15 V M22
2023-10-15 22:32:45 C 23 00 12.826 -05 28 33.06 V M22
2023-10-16 04:26:26 C 23 00 31.046 -05 29 28.93 V G96
2023-10-16 04:33:55 C 23 00 31.399 -05 29 29.80 V G96
2023-10-16 04:41:21 C 23 00 31.727 -05 29 30.80 V G96
2023-10-16 04:48:48 C 23 00 32.087 -05 29 31.42 V G96
2023-10-17 03:27:35 C 23 01 40.343 -05 31 47.89 V 703
2023-10-17 03:33:16 C 23 01 40.631 -05 31 48.00 V 703
2023-10-17 03:38:57 C 23 01 40.872 -05 31 48.68 V 703
2023-10-17 03:46:45 C 23 01 41.236 -05 31 49.98 V 703
2023-10-18 20:07:03 C 23 03 43.404 -05 34 47.64 V M22
2023-10-18 20:11:43 C 23 03 43.637 -05 34 47.89 V M22
2023-10-18 20:20:21 C 23 03 44.047 -05 34 48.43 V M22
2023-10-18 20:35:35 C 23 03 44.710 -05 34 49.66 V M22
2023-10-20 02:11:28 C 23 05 15.826 -05 36 33.30 V W68
2023-10-20 02:20:41 C 23 05 16.277 -05 36 32.72 V W68
2023-10-20 02:25:16 C 23 05 16.505 -05 36 33.37 V W68
2023-10-20 02:41:01 C 23 05 17.270 -05 36 33.95 V W68
2023-10-20 03:50:18 C 23 05 21.131 -05 36 52.60 V 703
2023-10-20 03:57:52 C 23 05 21.530 -05 36 52.67 V 703
2023-10-20 04:05:26 C 23 05 21.836 -05 36 52.85 V 703
2023-10-20 04:13:00 C 23 05 22.211 -05 36 53.24 V 703
2023-11-08 04:04:30 C 23 30 28.091 -05 03 55.40 V G96
2023-11-08 04:14:05 C 23 30 28.638 -05 03 53.17 V G96
2023-11-08 04:21:33 C 23 30 29.056 -05 03 51.91 V G96
2023-11-08 04:29:02 C 23 30 29.466 -05 03 50.72 V G96
2023-11-13 05:15:29 C 23 37 36.574 -04 40 08.96 X F52
2023-11-13 05:32:19 C 23 37 37.525 -04 40 05.38 X F52
2023-11-13 05:49:09 C 23 37 38.489 -04 40 01.77 X F52
2023-11-13 06:06:04 C 23 37 39.446 -04 39 58.07 X F52
2023-12-07 03:06:47 C 00 13 24.622 -01 52 34.93 V G96
2023-12-07 03:14:59 C 00 13 25.129 -01 52 32.59 V G96
2023-12-07 03:23:11 C 00 13 25.644 -01 52 29.78 V G96
2023-12-07 03:31:22 C 00 13 26.159 -01 52 26.54 V G96
2024-01-05 05:26:10 C 01 00 00.108 +02 36 45.72 X F51
2024-01-05 05:45:14 C 01 00 01.391 +02 36 53.51 X F51
2024-01-05 06:04:18 C 01 00 02.660 +02 37 01.25 X F51
2025-01-22 08:34:55 C 08 02 20.370 +12 50 12.78 X F51
2025-01-22 08:53:54 C 08 02 19.478 +12 50 15.68 X F51
2025-01-22 09:12:57 C 08 02 18.572 +12 50 18.90 X F51
2025-01-22 09:32:09 C 08 02 17.681 +12 50 21.83 X F51