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
2022-01-09 20:53:53 S 06 54 45.725 +33 59 37.25 V C57
2022-01-09 20:53:53 s 1 -162387.21 5 +280533.09 1910.0 C57
2022-01-09 21:03:53 S 06 54 44.170 +33 59 15.18 V C57
2022-01-09 21:03:53 s 1 -162624.13 5 +280060.09 2070.0 C57
2022-01-09 21:13:53 S 06 54 42.470 +33 58 51.89 V C57
2022-01-09 21:13:53 s 1 -162860.43 5 +279586.01 9130.0 C57
2022-01-09 21:23:53 S 06 54 40.858 +33 58 26.65 V C57
2022-01-09 21:23:53 s 1 -163096.11 3 +279110.86 3090.0 C57
2022-01-09 21:33:53 S 06 54 39.314 +33 58 01.49 V C57
2022-01-09 21:33:53 s 1 -163331.16 7 +278634.62 3930.0 C57
2022-01-09 21:43:53 S 06 54 37.870 +33 57 37.51 V C57
2022-01-09 21:43:53 s 1 -163565.59 3 +278157.31 1640.0 C57
2022-01-09 21:53:53 S 06 54 36.161 +33 57 13.46 V C57
2022-01-09 21:53:53 s 1 -163799.38 9 +277678.92 6220.0 C57
2022-01-09 22:03:53 S 06 54 34.435 +33 56 49.70 V C57
2022-01-09 22:03:53 s 1 -164032.55 4 +277199.44 7640.0 C57
2022-01-09 22:13:53 S 06 54 32.952 +33 56 24.86 V C57
2022-01-09 22:13:53 s 1 -164265.08 4 +276718.89 5900.0 C57
2022-01-09 22:23:53 S 06 54 31.342 +33 56 01.90 V C57
2022-01-09 22:23:53 s 1 -164496.97 8 +276237.25 980.0 C57
2022-01-09 22:33:53 S 06 54 29.729 +33 55 37.67 V C57
2022-01-09 22:33:53 s 1 -164728.23 2 +275754.53 2880.0 C57
2022-01-09 22:43:53 S 06 54 28.169 +33 55 13.62 V C57
2022-01-09 22:43:53 s 1 -164958.84 4 +275270.73 1590.0 C57
2022-01-09 22:53:53 S 06 54 26.518 +33 54 49.00 V C57
2022-01-09 22:53:53 s 1 -165188.81 1 +274785.84 7090.0 C57
2022-01-09 23:03:53 S 06 54 24.845 +33 54 27.04 V C57
2022-01-09 23:03:53 s 1 -165418.13 2 +274299.87 9370.0 C57
2022-01-09 23:13:53 S 06 54 23.230 +33 53 59.86 V C57
2022-01-09 23:13:53 s 1 -165646.80 4 +273812.81 8420.0 C57
2022-01-09 23:23:53 S 06 54 21.782 +33 53 37.93 V C57
2022-01-09 23:23:53 s 1 -165874.82 3 +273324.67 4230.0 C57
2022-01-09 23:33:53 S 06 54 20.117 +33 53 13.24 V C57
2022-01-09 23:33:53 s 1 -166102.18 8 +272835.43 6790.0 C57
2022-01-09 23:43:53 S 06 54 18.528 +33 52 48.32 V C57
2022-01-09 23:43:53 s 1 -166328.89 6 +272345.11 6080.0 C57
2022-01-09 23:53:53 S 06 54 16.963 +33 52 25.25 V C57
2022-01-09 23:53:53 s 1 -166554.94 4 +271853.71 2100.0 C57
2022-01-10 00:03:53 S 06 54 15.406 +33 52 00.30 V C57
2022-01-10 00:03:53 s 1 -166780.33 0 +271361.21 4830.0 C57
2022-01-10 00:13:53 S 06 54 13.754 +33 51 35.64 V C57
2022-01-10 00:13:53 s 1 -167005.05 2 +270867.62 4260.0 C57
2022-01-10 00:23:53 S 06 54 12.197 +33 51 10.94 V C57
2022-01-10 00:23:53 s 1 -167229.10 6 +270372.94 380.0 C57
2022-01-10 00:33:53 S 06 54 10.442 +33 50 47.33 V C57
2022-01-10 00:33:53 s 1 -167452.49 0 +269877.17 3180.0 C57
2022-01-10 00:43:53 S 06 54 08.947 +33 50 24.58 V C57
2022-01-10 00:43:53 s 1 -167675.20 1 +269380.31 2650.0 C57
2022-01-10 00:53:53 S 06 54 07.373 +33 50 04.24 V C57
2022-01-10 00:53:53 s 1 -167897.23 7 +268882.35 8770.0 C57