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
2023-09-23 15:06:56 C 22 36 09.317 -02 43 35.80 V P07
2023-09-23 16:18:23 C 22 36 11.779 -02 44 12.44 V P07
2023-09-24 03:47:45 C 22 36 40.928 -02 50 25.04 V 703
2023-09-24 03:56:03 C 22 36 41.231 -02 50 29.26 V 703
2023-09-24 04:04:20 C 22 36 41.540 -02 50 33.68 V 703
2023-09-24 04:12:36 C 22 36 41.825 -02 50 37.86 V 703
2023-09-30 08:13:26 C 22 42 53.707 -03 56 43.44 X F52
2023-09-30 08:32:07 C 22 42 54.413 -03 56 50.71 X F52
2023-09-30 08:50:42 C 22 42 55.116 -03 56 57.97 X F52
2023-10-01 19:03:19 C 22 44 24.75 -04 09 50.9 V G17
2023-10-01 19:13:30 C 22 44 25.18 -04 09 54.5 V G17
2023-10-01 19:23:40 C 22 44 25.57 -04 09 58.7 V G17
2023-10-02 04:05:58 C 22 44 47.585 -04 12 41.98 V W68
2023-10-02 04:10:32 C 22 44 47.770 -04 12 43.34 V W68
2023-10-02 04:26:53 C 22 44 48.389 -04 12 49.21 V W68
2023-10-02 20:19:07 C 22 45 30.84 -04 18 43.4 X G02
2023-10-02 20:26:34 C 22 45 31.14 -04 18 45.8 X G02
2023-10-02 20:33:28 C 22 45 31.43 -04 18 48.4 X G02
2023-10-03 05:22:16 C 22 45 54.745 -04 21 42.77 V 703
2023-10-03 05:30:15 C 22 45 55.040 -04 21 45.50 V 703
2023-10-03 05:38:15 C 22 45 55.336 -04 21 47.92 V 703
2023-10-03 05:46:15 C 22 45 55.663 -04 21 50.72 V 703
2023-10-03 21:02:07 C 22 46 36.281 -04 26 30.01 V M22
2023-10-03 21:06:41 C 22 46 36.444 -04 26 31.45 V M22
2023-10-03 21:16:59 C 22 46 36.859 -04 26 34.91 V M22
2023-10-03 21:31:30 C 22 46 37.433 -04 26 39.48 V M22
2023-10-04 06:03:48 C 22 47 01.200 -04 29 38.84 X F52
2023-10-04 06:19:25 C 22 47 01.830 -04 29 43.78 X F52
2023-10-04 06:35:01 C 22 47 02.453 -04 29 48.71 X F52
2023-10-04 06:50:36 C 22 47 03.078 -04 29 53.65 X F52
2023-10-05 03:20:05 C 22 47 57.504 -04 35 54.13 V W68
2023-10-05 03:24:39 C 22 47 57.706 -04 35 55.64 V W68
2023-10-05 03:32:32 C 22 47 58.063 -04 35 57.73 V W68
2023-10-05 03:47:15 C 22 47 59.384 -04 36 20.45 V 703
2023-10-05 03:50:39 C 22 47 58.774 -04 36 02.92 V W68
2023-10-05 03:55:41 C 22 47 59.744 -04 36 23.29 V 703
2023-10-05 04:04:06 C 22 48 00.072 -04 36 25.56 V 703
2023-10-05 04:12:32 C 22 48 00.436 -04 36 28.44 V 703
2023-10-08 02:44:37 C 22 51 13.080 -04 55 16.82 V W68
2023-10-08 02:49:15 C 22 51 13.267 -04 55 17.98 V W68
2023-10-08 02:59:19 C 22 51 13.694 -04 55 20.10 V W68
2023-10-08 03:16:53 C 22 51 14.410 -04 55 24.28 V W68
2023-10-11 02:31:33 C 22 54 34.982 -05 10 56.96 V W68
2023-10-11 02:49:34 C 22 54 35.794 -05 11 00.02 V W68
2023-10-11 02:54:09 C 22 54 35.971 -05 11 01.00 V W68
2023-10-11 03:02:47 C 22 54 36.365 -05 11 02.54 V W68
2023-10-11 04:27:29 C 22 54 40.691 -05 11 36.60 V 703
2023-10-11 04:35:10 C 22 54 41.022 -05 11 37.68 V 703
2023-10-11 04:42:50 C 22 54 41.353 -05 11 39.41 V 703
2023-10-11 04:50:31 C 22 54 41.706 -05 11 40.52 V 703