275545 (1998 UN1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2209465239 ± 2.89e-08
Semi-major axis (a)1.5134686470 AU ± 1.10e-09
Inclination (i)32.42431977° ± 4.83e-06
Long. of Asc. Node (Ω)217.84805156° ± 3.68e-06
Arg. of Perihelion (ω)87.72191665° ± 1.10e-05
Mean Anomaly (M)248.63036815° ± 8.23e-06
Mean Motion (n)0.5293612332°/day ± 5.75e-10
Perihelion dist (q)1.17907301 AU ± 4.38e-08
Aphelion dist (Q)1.84786428 AU ± 4.38e-08
Orbital Period1.86191625 yr ± 2.02e-09
Physical Parameters
H (abs. magnitude)18.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.339″
Uncertainty0
Orbit TypeAmor
MOID0.377078 AU
Observations Used577
Oppositions12
Arc Total1998-2024
First Observation Used1998-10-19
Last Observation Used2024-12-26
Observations (611)
Date Type RA Dec Mag Band Observatory
2000-10-24 00:42:10 C 05 13 55.05 +06 43 22.2 c 046
2000-11-22 10:39:40 C 04 32 26.64 -13 08 44.7 20.5 c 608
2000-11-22 10:55:23 C 04 32 25.44 -13 09 04.2 20.4 c 608
2000-11-22 11:11:13 C 04 32 24.24 -13 09 24.1 20.9 c 608
2000-11-23 10:56:22 C 04 30 39.32 -13 38 53.7 20.7 c 608
2000-11-23 11:12:14 C 04 30 38.17 -13 39 13.7 20.8 c 608
2000-11-23 11:27:26 C 04 30 36.98 -13 39 32.1 21.2 c 608
2002-12-28 14:56:43 C 06 12 18.82 -31 26 53.4 e 413
2002-12-28 15:06:14 C 06 12 18.15 -31 26 55.1 e 413
2002-12-29 13:35:17 C 06 10 43.67 -31 31 55.4 e 413
2002-12-29 13:38:26 C 06 10 43.43 -31 31 56.8 e 413
2009-04-02 16:44:40 C 12 25 20.10 -39 29 28.1 r E12
2009-04-02 17:15:50 C 12 25 18.33 -39 28 45.5 r E12
2009-04-02 17:31:24 C 12 25 17.36 -39 28 22.9 r E12
2009-05-15 05:16:47 C 12 00 58.50 -03 58 32.9 r 703
2009-05-15 05:28:12 C 12 00 58.68 -03 58 10.0 r 703
2009-05-15 05:50:33 C 12 00 59.04 -03 57 25.9 r 703
2009-06-06 03:06:09 C 12 21 45.03 +09 41 41.5 o H55
2009-06-06 03:20:02 C 12 21 45.83 +09 41 57.7 o H55
2009-06-06 03:35:03 C 12 21 46.64 +09 42 13.0 o H55
2011-04-06 08:10:26 C 17 23 43.26 -18 50 49.0 o 807
2011-04-06 08:19:14 C 17 23 44.00 -18 50 33.6 o 807
2011-04-14 12:45:26 C 17 38 51.68 -12 12 21.8 o F65
2011-04-14 12:46:36 C 17 38 51.77 -12 12 19.3 o F65
2011-04-14 12:47:45 C 17 38 51.86 -12 12 16.2 o F65
2011-04-16 09:19:27 C 17 42 03.03 -10 27 50.5 o 807
2011-04-16 09:23:40 C 17 42 03.32 -10 27 40.3 o 807
2011-04-16 09:27:52 C 17 42 03.62 -10 27 30.2 o 807
2011-04-16 09:37:32 C 17 42 04.25 -10 27 07.0 o 807
2011-05-02 01:02:17 C 18 05 02.18 +07 31 02.3 c A24
2011-05-02 01:02:50 C 18 05 02.24 +07 31 03.8 c A24
2011-05-02 01:03:22 C 18 05 02.29 +07 31 05.4 c A24
2011-05-07 01:06:46 C 18 10 39.98 +14 12 30.4 r A17
2011-05-07 01:18:02 C 18 10 40.46 +14 13 08.8 r A17
2011-05-07 01:29:16 C 18 10 40.90 +14 13 46.9 r A17
2011-05-07 01:53:47 C 18 10 41.88 +14 15 11.4 v 204
2011-05-07 02:00:29 C 18 10 42.12 +14 15 34.4 v 204
2011-05-07 02:07:28 C 18 10 42.42 +14 15 58.1 v 204
2011-05-08 00:56:58 C 18 11 40.73 +15 33 37.1 c A24
2011-05-08 00:57:30 C 18 11 40.74 +15 33 38.8 c A24
2011-05-08 00:58:02 C 18 11 40.72 +15 33 40.3 c A24
2011-05-08 02:04:31 C 18 11 43.29 +15 37 27.3 c A24
2011-05-08 02:05:02 C 18 11 43.31 +15 37 28.9 c A24
2011-05-08 02:05:35 C 18 11 43.32 +15 37 31.2 c A24
2011-05-10 23:09:55 C 18 14 27.18 +19 33 06.2 r 104
2011-05-10 23:16:28 C 18 14 27.44 +19 33 28.3 r 104
2011-05-10 23:22:15 C 18 14 27.66 +19 33 48.0 r 104
2011-05-17 07:38:51 C 18 19 22.28 +28 04 30.4 o H21
2011-05-17 07:38:54 C 18 19 22.79 +28 04 32.0 o 926
2011-05-17 07:42:48 C 18 19 22.39 +28 04 43.1 o H21