18882 (1999 YN4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2321218724 ± 9.10e-09
Semi-major axis (a)1.6850068777 AU ± 1.15e-09
Inclination (i)36.81465272° ± 5.29e-07
Long. of Asc. Node (Ω)291.66685521° ± 7.61e-07
Arg. of Perihelion (ω)242.66795075° ± 2.19e-06
Mean Anomaly (M)230.13214226° ± 2.27e-06
Mean Motion (n)0.4506192696°/day ± 4.60e-10
Perihelion dist (q)1.29387993 AU ± 1.54e-08
Aphelion dist (Q)2.07613383 AU ± 1.54e-08
Orbital Period2.18727061 yr ± 2.23e-09
Physical Parameters
H (abs. magnitude)16.14
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.067″
Uncertainty0
Orbit TypeAmor
MOID0.430698 AU
Observations Used2638
Gaia Obs Used122
Oppositions34
Arc Total1954-2025
First Observation Used1954-01-04
Last Observation Used2025-12-18
Observations (4085)
Date Type RA Dec Mag Band Observatory
2012-10-23 18:42:27 C 23 23 12.34 +70 51 42.2 c A24
2012-10-23 18:43:29 C 23 23 12.56 +70 51 41.8 c A24
2012-10-23 18:44:31 C 23 23 12.46 +70 51 41.6 c A24
2012-10-23 19:04:51 C 23 23 10.32 +70 51 32.1 c A24
2012-10-23 19:28:59 C 23 23 07.99 +70 51 21.1 c A24
2012-10-23 19:49:09 C 23 23 05.83 +70 51 11.8 c A24
2012-10-23 19:51:12 C 23 23 05.76 +70 51 10.5 c A24
2012-11-05 03:21:04 C 23 03 32.33 +67 52 46.8 19.4 c 704
2012-11-05 03:42:11 C 23 03 31.51 +67 52 32.4 19.6 c 704
2012-11-05 04:03:10 C 23 03 30.74 +67 52 16.6 19.6 c 704
2012-11-05 04:46:07 C 23 03 29.07 +67 51 45.5 19.5 c 704
2012-11-20 18:27:01 C 23 03 09.30 +62 46 27.3 t 130
2012-11-20 18:30:59 C 23 03 09.34 +62 46 24.4 t 130
2012-11-20 18:34:14 C 23 03 09.44 +62 46 21.5 t 130
2012-11-20 18:37:28 C 23 03 09.57 +62 46 18.4 t 130
2012-11-28 05:22:12 C 23 10 21.237 +60 06 02.30 L F51
2012-11-28 05:40:10 C 23 10 22.079 +60 05 45.89 L F51
2012-12-03 19:27:03 C 23 18 01.67 +58 03 58.1 c A24
2012-12-03 19:43:38 C 23 18 02.67 +58 03 42.9 c A24
2012-12-03 19:49:20 C 23 18 03.03 +58 03 37.6 c A24
2012-12-03 20:11:04 C 23 18 04.35 +58 03 17.4 c A24
2012-12-03 20:16:47 C 23 18 04.69 +58 03 12.1 c A24
2012-12-03 20:32:19 C 23 18 05.62 +58 02 57.8 c A24
2012-12-05 18:27:36 C 23 21 06.63 +57 21 10.8 c A24
2012-12-05 18:28:39 C 23 21 06.67 +57 21 09.4 c A24
2012-12-05 18:29:41 C 23 21 06.79 +57 21 08.7 c A24
2012-12-05 19:33:33 C 23 21 10.98 +57 20 09.8 c A24
2012-12-05 19:34:35 C 23 21 11.05 +57 20 08.6 c A24
2012-12-05 19:35:37 C 23 21 11.18 +57 20 07.9 c A24
2012-12-09 18:51:46 C 23 27 58.98 +55 53 44.3 c A24
2012-12-09 18:52:49 C 23 27 59.04 +55 53 44.5 c A24
2012-12-09 18:53:51 C 23 27 59.17 +55 53 43.3 c A24
2012-12-09 18:54:53 C 23 27 59.24 +55 53 41.9 c A24
2012-12-16 18:54:59 C 23 41 31.09 +53 23 45.3 i C91
2012-12-16 19:02:00 C 23 41 31.72 +53 23 39.2 i C91
2012-12-31 17:26:00 C 00 15 14.89 +48 22 17.6 i C91
2012-12-31 17:44:59 C 00 15 16.78 +48 22 02.4 i C91
2012-12-31 17:59:00 C 00 15 18.26 +48 21 50.4 i C91
2013-03-14 03:22:56 C 03 31 49.94 +30 59 35.8 u 703
2013-03-14 03:30:43 C 03 31 50.77 +30 59 30.9 u 703
2013-03-14 03:38:33 C 03 31 51.67 +30 59 27.1 u 703
2013-03-14 03:46:21 C 03 31 52.60 +30 59 22.7 u 703
2014-06-07 09:39:53 C 23 11 28.73 +20 28 06.6 q 703
2014-06-07 10:01:49 C 23 11 29.51 +20 28 28.4 q 703
2014-06-07 10:12:44 C 23 11 29.82 +20 28 38.9 q 703
2014-06-28 09:37:37 C 23 24 00.23 +29 19 36.5 q 703
2014-06-28 09:46:18 C 23 24 00.33 +29 19 45.0 q 703
2014-06-28 09:54:58 C 23 24 00.40 +29 19 54.8 q 703
2014-06-28 10:03:38 C 23 24 00.54 +29 20 05.0 q 703
2014-07-17 08:43:27 C 23 25 07.02 +37 25 17.6 u H21