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
2001-05-12 23:05:40 C 14 51 36.19 -07 13 42.9 118
2001-05-15 05:25:04 C 14 49 19.66 -06 42 47.5 c 699
2001-05-15 06:05:26 C 14 49 17.79 -06 42 24.7 c 699
2001-05-15 06:45:55 C 14 49 15.96 -06 42 02.5 c 699
2001-05-15 07:26:30 C 14 49 14.09 -06 41 39.8 c 699
2001-05-21 23:41:28 C 14 42 37.90 -05 14 06.1 118
2001-05-21 23:46:31 C 14 42 37.72 -05 14 03.5 118
2001-05-22 05:18:13 C 14 42 25.11 -05 11 07.1 19.0 c 704
2001-05-22 05:32:38 C 14 42 24.44 -05 10 58.9 18.2 c 704
2001-05-22 05:46:59 C 14 42 23.89 -05 10 51.8 18.1 c 704
2001-05-22 06:01:20 C 14 42 23.26 -05 10 44.3 18.2 c 704
2001-05-22 21:31:58 C 14 41 47.07 -05 02 47.4 947
2001-05-22 21:36:44 C 14 41 46.84 -05 02 44.9 947
2001-05-24 22:08:38 C 14 39 56.06 -04 38 18.0 947
2001-05-24 22:19:10 C 14 39 55.59 -04 38 14.2 947
2001-05-29 05:19:03 C 14 36 21.65 -03 50 18.1 17.9 c 704
2001-05-29 05:35:19 C 14 36 21.04 -03 50 10.1 18.8 c 704
2001-05-29 05:51:35 C 14 36 20.51 -03 50 03.4 18.2 c 704
2001-05-29 06:07:52 C 14 36 19.89 -03 49 55.9 18.3 c 704
2001-05-29 06:24:08 C 14 36 19.35 -03 49 48.6 18.2 c 704
2001-05-31 07:44:45 C 14 34 49.81 -03 29 01.1 18.9 c 608
2001-05-31 07:59:40 C 14 34 49.32 -03 28 55.1 19.3 c 608
2001-05-31 08:15:08 C 14 34 48.79 -03 28 48.6 19.5 c 608
2001-06-13 04:38:30 C 14 29 24.23 -01 57 21.3 c 699
2001-06-13 05:22:21 C 14 29 23.86 -01 57 13.0 c 699
2001-06-13 06:06:16 C 14 29 23.46 -01 57 05.0 c 699
2001-06-13 06:50:27 C 14 29 23.09 -01 56 56.9 c 699
2004-03-20 13:40:03 C 13 05 07.81 -07 22 44.5 c 568
2004-03-25 11:07:54 C 13 00 33.83 -06 38 38.8 c 711
2004-03-25 11:23:46 C 13 00 32.30 -06 38 33.4 c 711
2004-03-25 11:39:42 C 13 00 31.68 -06 38 28.0 c 711
2004-04-02 11:03:40 C 12 51 56.98 -05 16 41.6 V 608
2004-04-02 11:19:06 C 12 51 56.26 -05 16 34.2 V 608
2004-04-20 03:15:59 C 12 31 19.86 -01 56 50.1 c 691
2004-04-20 03:54:08 C 12 31 18.04 -01 56 32.8 c 691
2004-04-20 04:32:53 C 12 31 16.18 -01 56 14.9 c 691
2004-04-21 07:48:17 C 12 30 01.34 -01 43 51.2 20.0 c 704
2004-04-21 08:05:03 C 12 30 00.60 -01 43 42.6 19.7 c 704
2004-04-21 08:21:45 C 12 29 59.76 -01 43 35.7 20.0 c 704
2007-02-23 09:46:58 C 12 04 10.39 -03 43 51.4 o 691
2007-02-23 10:12:20 C 12 04 09.58 -03 43 45.5 o 691
2007-02-23 10:37:43 C 12 04 08.78 -03 43 40.1 o 691
2007-03-11 09:02:03 C 11 49 42.56 -01 48 17.3 r G96
2007-03-11 09:12:41 C 11 49 42.06 -01 48 13.1 r G96
2007-03-11 09:23:17 C 11 49 41.55 -01 48 09.4 r G96
2007-03-11 09:33:54 C 11 49 41.08 -01 48 05.6 r G96
2007-04-11 06:15:44 C 11 16 21.68 +03 03 38.6 r G96
2007-04-11 06:26:04 C 11 16 21.25 +03 03 42.4 r G96
2007-04-11 06:36:39 C 11 16 20.92 +03 03 45.9 r G96
2007-04-11 06:47:06 C 11 16 20.49 +03 03 49.8 r G96