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
2022-01-01 22:03:53 S 07 25 54.497 +40 31 56.03 V C57
2022-01-01 22:03:53 s 1 +178823.35 1 +178560.08 2900.0 C57
2022-01-01 22:13:53 S 07 25 52.872 +40 31 39.65 V C57
2022-01-01 22:13:53 s 1 +178755.33 5 +179266.72 4300.0 C57
2022-01-01 22:23:53 S 07 25 51.269 +40 31 21.68 V C57
2022-01-01 22:23:53 s 1 +178685.90 6 +179971.96 9970.0 C57
2022-01-01 22:33:53 S 07 25 49.781 +40 31 06.71 V C57
2022-01-01 22:33:53 s 1 +178615.07 0 +180675.79 9950.0 C57
2022-01-01 22:43:53 S 07 25 48.372 +40 30 50.72 V C57
2022-01-01 22:43:53 s 1 +178542.83 4 +181378.21 4270.0 C57
2022-01-01 22:53:53 S 07 25 46.690 +40 30 33.55 V C57
2022-01-01 22:53:53 s 1 +178469.20 6 +182079.24 2970.0 C57
2022-01-01 22:54:10 C 07 24 54.06 +40 25 14.0 V L93
2022-01-01 23:03:53 S 07 25 45.178 +40 30 18.14 V C57
2022-01-01 23:03:53 s 1 +178394.19 3 +182778.87 6060.0 C57
2022-01-01 23:04:16 C 07 24 52.47 +40 24 56.4 V L93
2022-01-01 23:13:53 S 07 25 43.759 +40 30 01.44 V C57
2022-01-01 23:13:53 s 1 +178317.80 2 +183477.10 3580.0 C57
2022-01-01 23:14:07 C 07 24 50.86 +40 24 39.1 V L93
2022-01-01 23:20:38 C 07 24 49.82 +40 24 27.0 V L93
2022-01-01 23:23:53 S 07 25 42.235 +40 29 44.92 V C57
2022-01-01 23:23:53 s 1 +178240.03 9 +184173.93 5560.0 C57
2022-01-01 23:33:53 S 07 25 40.546 +40 29 26.38 V C57
2022-01-01 23:33:53 s 1 +178160.91 3 +184869.37 2030.0 C57
2022-01-01 23:40:06 C 07 24 46.67 +40 23 53.1 V L93
2022-01-01 23:43:53 S 07 25 38.899 +40 29 10.25 V C57
2022-01-01 23:43:53 s 1 +178080.42 9 +185563.41 3020.0 C57
2022-01-01 23:50:18 C 07 24 44.97 +40 23 35.5 V L93
2022-01-01 23:53:53 S 07 25 37.462 +40 28 53.80 V C57
2022-01-01 23:53:53 s 1 +177998.59 4 +186256.06 8560.0 C57
2022-01-02 00:03:53 S 07 25 35.873 +40 28 36.95 V C57
2022-01-02 00:03:53 s 1 +177915.41 6 +186947.32 8670.0 C57
2022-01-02 00:05:56 C 07 24 42.47 +40 23 07.3 V L93
2022-01-02 00:13:53 S 07 25 34.378 +40 28 19.74 V C57
2022-01-02 00:13:53 s 1 +177830.90 1 +187637.19 3400.0 C57
2022-01-02 00:23:53 S 07 25 32.846 +40 28 03.83 V C57
2022-01-02 00:23:53 s 1 +177745.05 6 +188325.67 2750.0 C57
2022-01-02 00:29:51 C 07 24 38.55 +40 22 25.0 V L93
2022-01-02 00:33:53 S 07 25 31.550 +40 27 48.13 V C57
2022-01-02 00:33:53 s 1 +177657.88 8 +189012.76 6770.0 C57
2022-01-02 00:43:53 S 07 25 29.875 +40 27 30.46 V C57
2022-01-02 00:43:53 s 1 +177569.40 2 +189698.46 5480.0 C57
2022-01-02 00:53:53 S 07 25 28.205 +40 27 13.86 V C57
2022-01-02 00:53:53 s 1 +177479.60 7 +190382.78 8910.0 C57
2022-01-02 01:03:53 S 07 25 26.614 +40 26 56.36 V C57
2022-01-02 01:03:53 s 1 +177388.50 7 +191065.72 7090.0 C57
2022-01-02 01:13:53 S 07 25 25.243 +40 26 40.24 V C57
2022-01-02 01:13:53 s 1 +177296.11 1 +191747.27 40.0 C57
2022-01-02 01:33:53 S 07 25 22.044 +40 26 05.96 V C57
2022-01-02 01:33:53 s 1 +177107.45 2 +193106.23 380.0 C57