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 12:23:53 S 06 56 07.771 +34 19 58.44 V C57
2022-01-09 12:23:53 s 1 -149535.81 9 +303244.14 9110.0 C57
2022-01-09 12:33:53 S 06 56 06.151 +34 19 33.46 V C57
2022-01-09 12:33:53 s 1 -149801.37 5 +302825.15 3750.0 C57
2022-01-09 12:43:53 S 06 56 04.577 +34 19 09.80 V C57
2022-01-09 12:43:53 s 1 -150066.42 2 +302405.13 5790.0 C57
2022-01-09 12:53:53 S 06 56 02.945 +34 18 46.33 V C57
2022-01-09 12:53:53 s 1 -150330.95 8 +301984.06 5230.0 C57
2022-01-09 13:03:53 S 06 56 01.342 +34 18 22.68 V C57
2022-01-09 13:03:53 s 1 -150594.98 1 +301561.95 2060.0 C57
2022-01-09 13:13:53 S 06 55 59.674 +34 17 57.41 V C57
2022-01-09 13:13:53 s 1 -150858.49 0 +301138.79 6260.0 C57
2022-01-09 13:23:53 S 06 55 58.128 +34 17 33.76 V C57
2022-01-09 13:23:53 s 1 -151121.48 1 +300714.59 7830.0 C57
2022-01-09 13:33:53 S 06 55 56.542 +34 17 09.35 V C57
2022-01-09 13:33:53 s 1 -151383.95 3 +300289.34 6770.0 C57
2022-01-09 13:43:53 S 06 55 54.953 +34 16 46.42 V C57
2022-01-09 13:43:53 s 1 -151645.90 4 +299863.05 3050.0 C57
2022-01-09 13:53:53 S 06 55 53.268 +34 16 22.87 V C57
2022-01-09 13:53:53 s 1 -151907.33 3 +299435.71 6670.0 C57
2022-01-09 14:03:53 S 06 55 51.756 +34 15 58.97 V C57
2022-01-09 14:03:53 s 1 -152168.23 6 +299007.32 7620.0 C57
2022-01-09 14:13:53 S 06 55 50.114 +34 15 35.60 V C57
2022-01-09 14:13:53 s 1 -152428.61 2 +298577.88 5900.0 C57
2022-01-09 14:23:53 S 06 55 48.461 +34 15 12.06 V C57
2022-01-09 14:23:53 s 1 -152688.46 0 +298147.40 1490.0 C57
2022-01-09 14:33:53 S 06 55 46.884 +34 14 47.08 V C57
2022-01-09 14:33:53 s 1 -152947.77 6 +297715.86 4390.0 C57
2022-01-09 14:43:53 S 06 55 45.242 +34 14 23.03 V C57
2022-01-09 14:43:53 s 1 -153206.55 9 +297283.27 4580.0 C57
2022-01-09 14:53:53 S 06 55 43.615 +34 14 00.17 V C57
2022-01-09 14:53:53 s 1 -153464.80 7 +296849.64 2050.0 C57
2022-01-09 15:03:53 S 06 55 42.050 +34 13 36.48 V C57
2022-01-09 15:03:53 s 1 -153722.51 7 +296414.95 6800.0 C57
2022-01-09 15:13:53 S 06 55 40.435 +34 13 13.15 V C57
2022-01-09 15:13:53 s 1 -153979.68 8 +295979.21 8820.0 C57
2022-01-09 15:23:53 S 06 55 38.760 +34 12 48.06 V C57
2022-01-09 15:23:53 s 1 -154236.31 8 +295542.41 8100.0 C57
2022-01-09 15:33:53 S 06 55 37.147 +34 12 24.91 V C57
2022-01-09 15:33:53 s 1 -154492.40 4 +295104.57 4630.0 C57
2022-01-09 15:43:53 S 06 55 35.561 +34 12 01.30 V C57
2022-01-09 15:43:53 s 1 -154747.94 5 +294665.67 8390.0 C57
2022-01-09 15:53:53 S 06 55 33.864 +34 11 37.18 V C57
2022-01-09 15:53:53 s 1 -155002.93 8 +294225.71 9380.0 C57
2022-01-09 16:03:53 S 06 55 32.419 +34 11 13.16 V C57
2022-01-09 16:03:53 s 1 -155257.38 1 +293784.70 7590.0 C57
2022-01-09 16:13:53 S 06 55 30.713 +34 10 49.55 V C57
2022-01-09 16:13:53 s 1 -155511.27 2 +293342.63 3020.0 C57
2022-01-09 16:23:53 S 06 55 29.141 +34 10 25.00 V C57
2022-01-09 16:23:53 s 1 -155764.60 8 +292899.50 5640.0 C57