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
2023-07-16 11:07:34 C 21 09 45.980 +09 50 55.08 X F52
2023-07-17 06:27:33 C 21 11 20.35 +09 58 17.7 q 463
2023-07-17 06:38:49 C 21 11 21.20 +09 58 21.9 q 463
2023-07-17 06:39:23 B 21 11 21.30 +09 58 26.7 V25
2023-07-17 06:51:03 C 21 11 21.99 +09 58 26.4 q 463
2023-07-17 07:05:32 B 21 11 23.18 +09 58 36.7 V25
2023-07-17 07:24:18 B 21 11 24.50 +09 58 44.1 V25
2023-07-17 20:38:57 C 21 12 29.13 +10 03 25.8 Y 557
2023-07-17 22:26:03 C 21 12 37.26 +10 04 05.4 Y 557
2023-07-17 23:20:55 C 21 12 41.30 +10 04 25.0 Y 557
2023-07-18 00:34:05 C 21 12 46.68 +10 04 51.2 Y 557
2023-07-18 00:36:53 C 21 12 46.668 +10 05 36.71 V M22
2023-07-18 00:42:18 C 21 12 47.062 +10 05 38.47 V M22
2023-07-18 00:50:04 C 21 12 47.618 +10 05 41.10 V M22
2023-07-18 01:10:42 C 21 12 49.37 +10 05 03.9 Y 557
2023-07-18 01:38:57 C 21 12 51.127 +10 05 58.09 V M22
2023-07-18 20:50:58 C 21 14 24.75 +10 11 42.6 q L04
2023-07-18 20:57:02 C 21 14 25.20 +10 11 44.5 q L04
2023-07-18 21:03:05 C 21 14 25.65 +10 11 46.5 q L04
2023-07-18 23:09:33 C 21 14 35.297 +10 12 29.45 V 160
2023-07-18 23:17:15 C 21 14 35.822 +10 12 32.00 V 160
2023-07-18 23:25:36 C 21 14 36.461 +10 12 34.31 V 160
2023-07-19 23:58:32 C 21 16 32.39 +10 19 59.3 16.7 q 122
2023-07-20 00:03:46 C 21 16 32.77 +10 20 00.8 16.7 q 122
2023-07-20 00:09:31 C 21 16 33.18 +10 20 02.5 16.7 q 122
2023-07-20 20:57:38 C 21 18 11.16 +10 25 32.9 Y 557
2023-07-20 22:15:44 C 21 18 16.86 +10 25 53.5 Y 557
2023-07-20 23:11:07 C 21 18 20.82 +10 26 07.6 Y 557
2023-07-22 23:25:18 C 21 22 02.43 +10 36 27.8 V G17
2023-07-22 23:32:56 C 21 22 02.95 +10 36 29.4 V G17
2023-07-22 23:40:34 C 21 22 03.48 +10 36 30.5 V G17
2023-07-23 09:06:53 C 21 22 47.207 +10 38 18.23 X F51
2023-07-23 09:22:45 C 21 22 48.278 +10 38 21.02 X F51
2023-07-23 09:39:33 C 21 22 49.406 +10 38 23.96 X F51
2023-07-23 09:55:27 C 21 22 50.469 +10 38 26.76 X F51
2023-07-23 22:38:27 C 21 23 47.498 +10 40 09.48 V 160
2023-07-23 22:44:16 C 21 23 47.863 +10 40 10.52 V 160
2023-07-23 22:49:16 C 21 23 48.204 +10 40 11.21 V 160
2023-07-26 21:33:59 C 21 28 59.70 +10 46 18.3 Y 557
2023-07-26 22:28:52 C 21 29 03.35 +10 46 20.8 Y 557
2023-07-26 23:11:34 C 21 29 06.15 +10 46 22.5 Y 557
2023-07-26 23:57:18 C 21 29 09.13 +10 46 24.0 Y 557
2023-07-28 04:55:00 C 21 31 13.248 +10 47 21.84 V W68
2023-07-28 05:27:53 C 21 31 15.283 +10 47 21.48 V W68
2023-07-28 05:33:15 C 21 31 15.600 +10 47 21.55 V W68
2023-07-28 06:01:54 C 21 31 17.374 +10 47 20.94 V W68
2023-07-28 22:10:18 C 21 32 26.37 +10 46 10.6 X K83
2023-07-28 22:16:17 C 21 32 26.77 +10 46 10.6 X K83
2023-07-28 22:21:52 C 21 32 27.12 +10 46 10.5 X K83
2023-07-29 22:11:05 C 21 34 06.271 +10 44 45.82 V 160