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
2023-07-29 22:17:55 C 21 34 06.725 +10 44 45.64 V 160
2023-07-29 22:24:46 C 21 34 07.145 +10 44 45.02 V 160
2023-07-30 20:52:25 C 21 35 39.703 +10 42 36.68 V 160
2023-07-30 20:59:26 C 21 35 40.150 +10 42 36.11 V 160
2023-07-30 21:06:04 C 21 35 40.594 +10 42 35.39 V 160
2023-07-30 21:18:00 C 21 35 41.06 +10 42 32.0 X G02
2023-07-30 21:22:29 C 21 35 41.32 +10 42 31.5 X G02
2023-07-30 21:26:59 C 21 35 41.62 +10 42 31.3 X G02
2023-07-31 05:08:14 C 21 36 12.240 +10 42 22.54 V W68
2023-07-31 05:10:51 C 21 36 12.408 +10 42 22.21 V W68
2023-07-31 05:15:24 C 21 36 12.672 +10 42 21.60 V W68
2023-07-31 05:30:01 C 21 36 13.524 +10 42 19.87 V W68
2023-08-04 21:11:46 C 21 43 29.45 +10 18 34.4 X C95
2023-08-04 21:20:28 C 21 43 29.96 +10 18 31.5 X C95
2023-08-05 00:35:10 C 21 43 40.195 +10 18 19.37 V M22
2023-08-05 00:39:48 C 21 43 40.447 +10 18 17.96 V M22
2023-08-05 00:57:12 C 21 43 41.376 +10 18 12.78 V M22
2023-08-05 01:08:18 C 21 43 41.983 +10 18 09.47 V M22
2023-08-06 21:23:57 C 21 46 25.711 +10 03 05.44 V 160
2023-08-06 21:30:56 C 21 46 26.186 +10 03 03.78 V 160
2023-08-06 21:37:55 C 21 46 26.599 +10 03 00.76 V 160
2023-08-07 00:50:55 B 21 46 36.73 +10 01 51.4 q M56
2023-08-07 01:06:30 B 21 46 37.56 +10 01 46.9 q M56
2023-08-07 01:19:24 B 21 46 38.25 +10 01 42.0 q M56
2023-08-08 01:06:06 C 21 48 02.179 +09 53 27.74 V M22
2023-08-08 01:10:41 C 21 48 02.414 +09 53 25.87 V M22
2023-08-08 01:24:23 C 21 48 03.101 +09 53 20.33 V M22
2023-08-08 01:43:32 C 21 48 04.078 +09 53 12.62 V M22
2023-08-08 01:51:05 C 21 48 07.30 +09 52 54.3 q X33
2023-08-08 01:53:35 C 21 48 05.045 +09 52 26.22 q M16
2023-08-08 01:56:07 C 21 48 07.63 +09 52 50.9 q X33
2023-08-08 02:00:50 C 21 48 07.93 +09 52 47.2 q X33
2023-08-08 02:16:53 C 21 48 06.266 +09 52 17.33 q M16
2023-08-08 02:40:12 C 21 48 07.478 +09 52 07.72 q M16
2023-08-09 23:15:28 C 21 50 42.50 +09 33 13.7 16.2 122
2023-08-09 23:33:44 C 21 50 43.40 +09 33 05.5 16.3 122
2023-08-09 23:48:14 C 21 50 44.11 +09 32 59.0 16.3 122
2023-08-09 23:53:00 B 21 50 44.17 +09 32 56.0 q M56
2023-08-10 00:14:14 B 21 50 45.22 +09 32 46.5 q M56
2023-08-10 00:21:12 B 21 50 45.56 +09 32 43.2 q M56
2023-08-10 22:02:03 C 21 51 58.934 +09 22 34.72 V 160
2023-08-10 22:09:02 C 21 51 59.258 +09 22 31.12 V 160
2023-08-10 22:10:52 C 21 51 59.37 +09 22 26.7 V G33
2023-08-10 22:12:33 C 21 51 59.44 +09 22 26.1 V G33
2023-08-10 22:14:14 C 21 51 59.54 +09 22 25.2 V G33
2023-08-10 22:15:54 C 21 51 59.645 +09 22 27.91 V 160
2023-08-10 22:15:55 C 21 51 59.62 +09 22 24.2 V G33
2023-08-10 22:17:37 C 21 51 59.70 +09 22 23.3 V G33
2023-08-10 22:19:18 C 21 51 59.77 +09 22 22.6 V G33
2023-08-10 23:08:16 C 21 52 02.36 +09 22 02.9 16.4 122