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
2022-02-20 08:08:54 C 05 41 27.57 -01 47 21.1 V T08
2022-02-20 08:14:51 C 05 41 27.53 -01 47 29.0 V T08
2022-02-20 08:23:29 C 05 41 27.49 -01 47 40.5 V T08
2022-02-20 08:37:58 C 05 41 27.43 -01 47 59.7 V T08
2022-02-20 18:20:38 C 05 41 27.88 -02 00 55.6 V K83
2022-02-20 18:22:52 C 05 41 27.87 -02 00 57.9 V K83
2022-02-20 18:25:06 C 05 41 27.88 -02 01 01.4 V K83
2022-02-20 18:27:20 C 05 41 27.87 -02 01 03.9 V K83
2022-02-21 02:02:02 C 05 41 27.725 -02 10 42.96 V W68
2022-02-21 02:09:20 C 05 41 27.706 -02 10 52.72 V W68
2022-02-21 02:13:16 C 05 41 27.698 -02 10 57.61 V W68
2022-02-21 02:31:48 C 05 41 27.662 -02 11 21.88 V W68
2022-02-21 18:42:45 S 05 41 29.84 -02 32 22.2 L C51
2022-02-21 21:50:42 S 05 41 30.36 -02 36 20.2 L C51
2022-02-22 00:58:50 S 05 41 30.99 -02 40 17.9 L C51
2022-02-22 05:41:02 S 05 41 31.99 -02 46 16.2 L C51
2022-02-22 06:24:28 C 05 41 32.10 -02 47 16.5 V T05
2022-02-22 06:29:04 C 05 41 32.09 -02 47 22.0 V T05
2022-02-22 06:37:01 C 05 41 32.09 -02 47 32.3 V T05
2022-02-22 06:52:12 C 05 41 32.10 -02 47 51.3 V T05
2022-02-22 07:14:55 S 05 41 32.25 -02 48 15.0 L C51
2022-02-22 08:48:59 S 05 41 32.69 -02 50 12.6 L C51
2022-02-22 15:05:16 S 05 41 34.33 -02 58 03.2 L C51
2022-02-22 18:13:13 S 05 41 35.22 -03 01 57.4 L C51
2022-02-24 06:19:08 C 05 41 49.85 -03 45 55.0 V T08
2022-02-24 06:38:23 C 05 41 49.93 -03 46 17.9 V T08
2022-02-24 06:46:57 C 05 41 49.99 -03 46 28.2 V T08
2022-02-24 09:02:49 C 05 41 51.10 -03 48 56.0 q E89
2022-02-24 09:11:01 C 05 41 51.16 -03 49 05.7 q E89
2022-02-24 09:20:31 C 05 41 51.20 -03 49 16.8 q E89
2022-02-24 09:28:31 C 05 41 51.26 -03 49 26.5 q E89
2022-02-25 05:05:50 C 05 42 02.59 -04 12 41.2 V 703
2022-02-25 05:14:02 C 05 42 02.64 -04 12 51.0 V 703
2022-02-25 05:22:15 C 05 42 02.72 -04 13 00.2 V 703
2022-02-25 09:16:44 C 05 42 05.36 -04 17 15.6 q E89
2022-02-25 09:23:35 C 05 42 05.41 -04 17 23.6 q E89
2022-02-25 09:28:50 C 05 42 05.48 -04 17 29.6 q E89
2022-02-26 06:17:26 C 05 42 20.62 -04 41 24.0 V T05
2022-02-26 06:22:05 C 05 42 20.65 -04 41 29.3 V T05
2022-02-26 06:29:58 C 05 42 20.75 -04 41 38.1 V T05
2022-02-26 06:48:28 C 05 42 20.94 -04 41 58.8 V T05
2022-02-26 18:23:43 C 05 42 30.53 -04 54 59.0 d B66
2022-02-26 18:50:40 C 05 42 30.85 -04 55 28.7 d B66
2022-02-26 19:18:49 C 05 42 31.16 -04 56 00.1 d B66
2022-02-26 19:52:12 C 05 42 31.54 -04 56 36.9 d B66
2022-02-27 19:21:57 C 05 42 52.80 -05 22 15.8 a 233
2022-02-27 19:28:01 C 05 42 52.97 -05 22 22.3 a 233
2022-02-27 19:34:05 C 05 42 52.94 -05 22 29.5 a 233
2022-02-27 19:40:09 C 05 42 53.07 -05 22 36.5 a 233
2022-03-01 04:45:09 C 05 43 27.77 -05 57 31.7 V 703