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
2022-01-10 01:03:53 S 06 54 05.758 +33 49 35.65 V C57
2022-01-10 01:03:53 s 1 -168118.59 6 +268383.30 1530.0 C57
2022-01-10 01:13:53 S 06 54 04.037 +33 49 10.92 V C57
2022-01-10 01:13:53 s 1 -168339.27 3 +267883.16 930.0 C57
2022-01-10 01:23:53 S 06 54 02.582 +33 48 47.09 V C57
2022-01-10 01:23:53 s 1 -168559.26 8 +267381.92 6940.0 C57
2022-01-10 01:33:53 S 06 54 00.982 +33 48 23.98 V C57
2022-01-10 01:33:53 s 1 -168778.57 7 +266879.58 9560.0 C57
2022-01-10 01:43:53 S 06 53 59.424 +33 47 58.63 V C57
2022-01-10 01:43:53 s 1 -168997.19 7 +266376.15 8770.0 C57
2022-01-10 01:53:53 S 06 53 57.833 +33 47 34.94 V C57
2022-01-10 01:53:53 s 1 -169215.12 5 +265871.62 4560.0 C57
2022-01-10 02:03:53 S 06 53 56.234 +33 47 10.54 V C57
2022-01-10 02:03:53 s 1 -169432.36 0 +265365.99 6930.0 C57
2022-01-10 02:13:53 S 06 53 54.626 +33 46 45.88 V C57
2022-01-10 02:13:53 s 1 -169648.89 8 +264859.26 5850.0 C57
2022-01-10 02:23:53 S 06 53 53.021 +33 46 22.69 V C57
2022-01-10 02:23:53 s 1 -169864.73 7 +264351.43 1320.0 C57
2022-01-10 02:33:53 S 06 53 51.403 +33 45 58.32 V C57
2022-01-10 02:33:53 s 1 -170079.87 3 +263842.51 3310.0 C57
2022-01-10 02:43:53 S 06 53 49.790 +33 45 33.19 V C57
2022-01-10 02:43:53 s 1 -170294.30 5 +263332.48 1830.0 C57
2022-01-10 02:53:53 S 06 53 48.211 +33 45 08.06 V C57
2022-01-10 02:53:53 s 1 -170508.02 8 +262821.35 6860.0 C57
2022-01-10 03:03:53 S 06 53 46.668 +33 44 44.02 V C57
2022-01-10 03:03:53 s 1 -170721.04 2 +262309.11 8390.0 C57
2022-01-10 03:13:53 S 06 53 45.043 +33 44 20.90 V C57
2022-01-10 03:13:53 s 1 -170933.34 1 +261795.77 6390.0 C57
2022-01-10 03:23:53 S 06 53 43.584 +33 43 58.62 V C57
2022-01-10 03:23:53 s 1 -171144.92 5 +261281.33 870.0 C57
2022-01-10 03:33:53 S 06 53 41.772 +33 43 31.62 V C57
2022-01-10 03:33:53 s 1 -171355.79 0 +260765.79 1800.0 C57
2022-01-10 03:43:53 S 06 53 40.291 +33 43 08.22 V C57
2022-01-10 03:43:53 s 1 -171565.93 2 +260249.13 9180.0 C57
2022-01-10 03:53:53 S 06 53 38.698 +33 42 44.57 V C57
2022-01-10 03:53:53 s 1 -171775.35 1 +259731.38 2990.0 C57
2022-01-10 04:03:53 S 06 53 37.092 +33 42 18.72 V C57
2022-01-10 04:03:53 s 1 -171984.04 1 +259212.51 3220.0 C57
2022-01-10 04:13:53 S 06 53 35.570 +33 41 54.56 V C57
2022-01-10 04:13:53 s 1 -172192.00 1 +258692.54 9860.0 C57
2022-01-10 04:23:53 S 06 53 33.821 +33 41 30.95 V C57
2022-01-10 04:23:53 s 1 -172399.22 8 +258171.45 2880.0 C57
2022-01-10 04:25:28 C 06 53 58.41 +33 37 11.9 V 703
2022-01-10 04:33:17 C 06 53 57.19 +33 36 53.8 V 703
2022-01-10 04:33:53 S 06 53 32.294 +33 41 06.54 V C57
2022-01-10 04:33:53 s 1 -172605.71 9 +257649.26 2290.0 C57
2022-01-10 04:41:06 C 06 53 56.00 +33 36 36.5 V 703
2022-01-10 04:43:53 S 06 53 30.758 +33 40 43.14 V C57
2022-01-10 04:43:53 s 1 -172811.47 0 +257125.96 8070.0 C57
2022-01-10 04:48:57 C 06 53 54.86 +33 36 17.8 V 703