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
2022-02-08 06:15:53 C 05 46 41.46 +05 54 48.4 V T08
2022-02-08 06:19:52 C 05 46 41.29 +05 54 40.8 V T08
2022-02-08 06:23:51 C 05 46 41.13 +05 54 33.3 V T08
2022-02-08 06:36:31 C 05 46 40.59 +05 54 09.3 V T08
2022-02-08 20:02:31 C 05 46 11.24 +05 28 58.5 V G17
2022-02-08 20:09:39 C 05 46 10.97 +05 28 45.4 V G17
2022-02-08 20:16:46 C 05 46 10.68 +05 28 31.9 V G17
2022-02-08 21:07:48 C 05 46 08.74 +05 26 57.5 X L63
2022-02-08 21:17:52 C 05 46 08.36 +05 26 39.0 X L63
2022-02-08 21:27:24 C 05 46 07.99 +05 26 21.3 X L63
2022-02-10 07:27:07 C 05 45 01.66 +04 24 45.8 V T05
2022-02-10 07:33:45 C 05 45 01.42 +04 24 33.9 V T05
2022-02-10 07:44:21 C 05 45 01.06 +04 24 15.0 V T05
2022-02-10 08:29:02 C 05 44 59.53 +04 22 55.8 V T05
2022-02-10 21:53:28 C 05 44 36.12 +03 59 11.9 X L63
2022-02-10 22:05:07 C 05 44 35.76 +03 58 51.7 X L63
2022-02-10 22:16:14 C 05 44 35.44 +03 58 32.0 X L63
2022-02-12 18:52:32 C 05 43 28.88 +02 42 32.5 V G33
2022-02-12 18:54:13 C 05 43 28.79 +02 42 29.6 V G33
2022-02-12 18:55:49 C 05 43 28.75 +02 42 27.4 V G33
2022-02-12 18:59:16 C 05 43 28.68 +02 42 21.5 V G33
2022-02-12 19:00:57 C 05 43 28.69 +02 42 18.2 V G33
2022-02-12 21:01:35 C 05 43 25.67 +02 38 59.9 V K87
2022-02-12 21:03:42 C 05 43 25.62 +02 38 56.1 V K87
2022-02-12 21:05:49 C 05 43 25.53 +02 38 52.7 V K87
2022-02-13 18:53:34 C 05 42 59.08 +02 03 17.5 X G02
2022-02-13 19:02:27 C 05 42 58.91 +02 03 02.7 X G02
2022-02-13 19:11:01 C 05 42 58.67 +02 02 49.1 X G02
2022-02-15 05:58:52 C 05 42 23.14 +01 07 58.7 V 703
2022-02-15 06:06:32 C 05 42 23.01 +01 07 46.9 V 703
2022-02-15 06:14:13 C 05 42 22.90 +01 07 34.9 V 703
2022-02-15 06:21:54 C 05 42 22.78 +01 07 23.1 V 703
2022-02-15 18:30:37 C 05 42 13.34 +00 48 43.3 V K74
2022-02-15 18:33:58 C 05 42 13.27 +00 48 37.8 V K74
2022-02-15 18:37:18 C 05 42 13.23 +00 48 33.2 V K74
2022-02-15 18:40:39 C 05 42 13.20 +00 48 28.2 V K74
2022-02-17 02:30:40 C 05 41 51.211 +00 01 16.39 V W68
2022-02-17 02:34:35 C 05 41 51.158 +00 01 10.81 V W68
2022-02-17 02:42:29 C 05 41 51.053 +00 00 59.08 V W68
2022-02-17 02:56:26 C 05 41 50.885 +00 00 38.70 V W68
2022-02-18 08:42:14 C 05 41 37.15 -00 42 19.0 V T05
2022-02-18 08:52:07 C 05 41 37.09 -00 42 32.8 V T05
2022-02-18 08:57:25 C 05 41 37.02 -00 42 40.6 V T05
2022-02-18 09:15:20 C 05 41 36.87 -00 43 05.6 V T05
2022-02-19 18:47:05 C 05 41 29.31 -01 29 29.8 V K74
2022-02-19 18:48:42 C 05 41 29.29 -01 29 32.1 V K74
2022-02-19 18:50:18 C 05 41 29.28 -01 29 34.4 V K74
2022-02-19 19:05:08 C 05 41 29.15 -01 29 54.5 X G02
2022-02-19 19:13:27 C 05 41 29.09 -01 30 05.8 X G02
2022-02-19 19:21:31 C 05 41 29.05 -01 30 16.9 X G02