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
1998-10-21 19:36:34 C 23 52 06.68 +31 47 28.3 557
1998-10-21 19:46:29 C 23 52 07.14 +31 46 56.8 z 468
1998-10-21 19:53:47 C 23 52 07.47 +31 46 33.5 z 468
1998-10-21 20:05:43 C 23 52 07.97 +31 45 52.6 z 468
1998-10-21 20:54:39 C 23 52 10.15 +31 43 07.8 z 620
1998-10-21 21:04:39 C 23 52 10.50 +31 42 34.1 z 620
1998-10-21 21:17:59 C 23 52 10.97 +31 41 49.2 z 620
1998-10-21 21:25:59 C 23 52 11.25 +31 41 22.3 z 620
1998-10-22 05:32:09 C 23 52 33.45 +31 13 57.1 658
1998-10-22 05:35:13 C 23 52 33.58 +31 13 46.9 658
1998-10-22 05:39:00 C 23 52 33.73 +31 13 34.0 658
1998-10-22 11:48:20 C 23 52 50.77 +30 52 53.3 z 402
1998-10-22 11:50:20 C 23 52 50.84 +30 52 46.6 z 402
1998-10-22 11:52:20 C 23 52 50.91 +30 52 39.6 z 402
1998-10-22 20:56:31 C 23 53 15.38 +30 22 03.4 118
1998-10-22 21:00:36 C 23 53 15.56 +30 21 49.6 118
1998-10-22 21:04:41 C 23 53 15.72 +30 21 36.0 118
1998-10-23 19:25:42 C 23 54 17.85 +29 06 40.8 118
1998-10-23 19:30:23 C 23 54 18.04 +29 06 24.9 118
1998-10-23 19:34:44 C 23 54 18.22 +29 06 10.7 118
1998-10-25 12:43:18 C 23 56 13.12 +26 49 55.8 z 402
1998-10-25 12:45:18 C 23 56 13.25 +26 49 49.1 z 402
1998-10-25 12:47:18 C 23 56 13.34 +26 49 42.6 z 402
1998-10-30 08:43:08 C 00 01 49.15 +20 42 11.3 658
1998-10-30 08:46:26 C 00 01 49.30 +20 42 01.1 658
1998-10-30 08:50:00 C 00 01 49.49 +20 41 50.4 658
1998-10-31 13:02:27 C 00 03 14.29 +19 17 21.4 z 402
1998-10-31 13:04:27 C 00 03 14.39 +19 17 18.0 z 402
1998-10-31 13:06:27 C 00 03 14.48 +19 17 11.6 z 402
1998-11-05 10:35:17 C 00 09 15.98 +13 49 54.8 z 402
1998-11-05 10:37:18 C 00 09 16.10 +13 49 49.5 z 402
1998-11-05 10:39:18 C 00 09 16.15 +13 49 43.3 z 402
1998-11-07 21:53:39 C 00 12 22.63 +11 21 06.1 118
1998-11-07 22:16:01 C 00 12 23.73 +11 20 11.6 118
1998-11-21 13:08:30 C 00 30 37.01 +00 59 53.4 b 426
1998-11-21 13:25:17 C 00 30 37.86 +00 59 30.4 b 426
1998-11-21 13:42:24 C 00 30 38.79 +00 59 05.2 b 426
1998-11-23 13:28:44 C 00 33 27.06 -00 06 08.5 360
1998-11-23 13:34:14 C 00 33 27.35 -00 06 15.3 360
1998-11-23 13:40:15 C 00 33 27.68 -00 06 23.5 360
2000-10-23 02:42:36 C 05 14 34.21 +07 23 33.3 c 046
2000-10-23 02:44:34 C 05 14 34.15 +07 23 29.4 c 046
2000-10-23 02:46:28 C 05 14 34.10 +07 23 26.6 c 046
2000-10-23 02:48:47 C 05 14 34.04 +07 23 22.2 c 046
2000-10-23 02:50:54 C 05 14 33.98 +07 23 18.5 c 046
2000-10-23 02:52:54 C 05 14 33.84 +07 23 13.2 c 046
2000-10-24 00:34:41 C 05 13 55.32 +06 43 35.6 c 046
2000-10-24 00:36:08 C 05 13 55.27 +06 43 32.6 c 046
2000-10-24 00:37:41 C 05 13 55.22 +06 43 29.7 c 046
2000-10-24 00:39:18 C 05 13 55.12 +06 43 26.8 c 046