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
2021-11-28 11:23:05 C 08 45 10.87 +51 51 38.0 V T08
2021-11-28 11:29:05 C 08 45 10.74 +51 51 36.6 V T08
2021-11-28 11:43:03 C 08 45 10.40 +51 51 32.3 V T08
2021-11-28 11:57:40 C 08 45 10.07 +51 51 27.8 V T08
2021-11-28 13:07:29 C 08 45 08.371 +51 51 07.80 U F52
2021-11-28 13:24:59 C 08 45 07.939 +51 51 02.67 U F52
2021-11-28 13:40:27 C 08 45 07.56 +51 50 58.5 V T08
2021-11-28 13:42:25 C 08 45 07.509 +51 50 57.53 U F52
2021-11-28 13:44:27 C 08 45 07.43 +51 50 57.1 V T08
2021-11-28 13:59:48 C 08 45 07.067 +51 50 52.27 U F52
2021-11-30 10:18:08 C 08 44 02.14 +51 36 46.3 V 703
2021-11-30 10:25:48 C 08 44 01.87 +51 36 44.0 V 703
2021-11-30 10:33:31 C 08 44 01.61 +51 36 41.3 V 703
2021-11-30 10:41:15 C 08 44 01.37 +51 36 39.2 V 703
2021-12-02 11:40:35 C 08 42 25.36 +51 19 52.4 V T08
2021-12-02 11:46:37 C 08 42 25.10 +51 19 50.3 V T08
2021-12-02 11:55:22 C 08 42 24.76 +51 19 46.9 V T08
2021-12-02 12:46:24 C 08 42 22.65 +51 19 29.6 V T08
2021-12-03 07:15:36 C 08 41 39.53 +51 12 40.0 V 703
2021-12-03 07:23:33 C 08 41 39.20 +51 12 37.4 V 703
2021-12-03 07:31:31 C 08 41 38.85 +51 12 34.6 V 703
2021-12-03 07:39:29 C 08 41 38.50 +51 12 31.9 V 703
2021-12-06 06:47:42 C 08 38 14.55 +50 44 12.6 V 703
2021-12-06 06:55:30 C 08 38 14.12 +50 44 09.5 V 703
2021-12-06 07:03:19 C 08 38 13.69 +50 44 06.3 V 703
2021-12-06 07:11:07 C 08 38 13.08 +50 44 02.8 V 703
2021-12-10 11:25:09 C 08 31 43.69 +49 56 21.2 V T08
2021-12-10 11:33:51 C 08 31 42.97 +49 56 17.0 V T08
2021-12-10 11:54:48 C 08 31 41.32 +49 56 06.0 V T08
2021-12-10 11:58:48 C 08 31 41.03 +49 56 03.9 V T08
2021-12-12 06:44:32 C 08 28 18.02 +49 32 03.8 V 703
2021-12-12 06:52:28 C 08 28 17.32 +49 31 59.4 V 703
2021-12-12 07:00:25 C 08 28 16.64 +49 31 55.1 V 703
2021-12-12 07:08:21 C 08 28 15.96 +49 31 50.4 V 703
2021-12-12 10:33:01 C 08 27 57.89 +49 29 52.5 V G96
2021-12-12 10:41:23 C 08 27 57.15 +49 29 47.5 V G96
2021-12-12 10:50:08 C 08 27 56.37 +49 29 42.4 V G96
2021-12-12 10:59:08 C 08 27 55.56 +49 29 36.9 V G96
2021-12-14 12:44:08 C 08 23 28.55 +48 58 21.2 V T08
2021-12-14 12:46:48 C 08 23 28.30 +48 58 19.3 V T08
2021-12-14 12:50:47 C 08 23 27.89 +48 58 16.7 V T08
2021-12-14 12:58:06 C 08 23 27.15 +48 58 11.7 V T08
2021-12-16 09:39:53 C 08 19 01.23 +48 26 38.8 V 703
2021-12-16 09:48:12 C 08 19 00.33 +48 26 32.9 V 703
2021-12-16 09:56:06 C 08 18 59.47 +48 26 27.0 V 703
2021-12-16 10:03:52 C 08 18 58.60 +48 26 21.1 V 703
2021-12-16 13:12:25 C 08 18 39.02 +48 24 03.6 V T05
2021-12-16 13:52:23 C 08 18 34.66 +48 23 33.5 V T05
2021-12-16 14:28:20 C 08 18 30.70 +48 23 06.0 V T05
2021-12-16 15:04:28 C 08 18 26.73 +48 22 38.4 V T05