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
2022-01-05 20:03:53 S 07 10 41.642 +37 36 31.07 V C57
2022-01-05 20:03:53 s 1 +28357.354 0 +389170.30 6860.0 C57
2022-01-05 20:13:53 S 07 10 39.914 +37 36 10.62 V C57
2022-01-05 20:13:53 s 1 +28001.089 0 +389254.26 6380.0 C57
2022-01-05 20:23:53 S 07 10 38.294 +37 35 49.52 V C57
2022-01-05 20:23:53 s 1 +27644.742 0 +389337.29 5960.0 C57
2022-01-05 20:33:53 S 07 10 36.578 +37 35 29.08 V C57
2022-01-05 20:33:53 s 1 +27288.317 0 +389419.41 5600.0 C57
2022-01-05 20:43:53 S 07 10 34.994 +37 35 08.45 V C57
2022-01-05 20:43:53 s 1 +26931.812 0 +389500.58 5300.0 C57
2022-01-05 20:53:53 S 07 10 33.326 +37 34 47.03 V C57
2022-01-05 20:53:53 s 1 +26575.228 0 +389580.82 5060.0 C57
2022-01-05 21:03:53 S 07 10 31.721 +37 34 28.27 V C57
2022-01-05 21:03:53 s 1 +26218.569 0 +389660.15 4860.0 C57
2022-01-05 21:13:53 S 07 10 29.897 +37 34 06.02 V C57
2022-01-05 21:13:53 s 1 +25861.832 0 +389738.53 4700.0 C57
2022-01-05 21:23:53 S 07 10 28.231 +37 33 45.22 V C57
2022-01-05 21:23:53 s 1 +25505.019 0 +389815.98 4590.0 C57
2022-01-05 21:33:53 S 07 10 26.606 +37 33 24.84 V C57
2022-01-05 21:33:53 s 1 +25148.134 0 +389892.52 4510.0 C57
2022-01-05 21:43:53 S 07 10 24.984 +37 33 04.39 V C57
2022-01-05 21:43:53 s 1 +24791.173 0 +389968.12 4470.0 C57
2022-01-05 21:53:53 S 07 10 23.270 +37 32 43.98 V C57
2022-01-05 21:53:53 s 1 +24434.139 0 +390042.79 4460.0 C57
2022-01-05 22:03:53 S 07 10 21.739 +37 32 23.10 V C57
2022-01-05 22:03:53 s 1 +24077.035 0 +390116.54 4470.0 C57
2022-01-05 22:13:53 S 07 10 19.975 +37 32 02.00 V C57
2022-01-05 22:13:53 s 1 +23719.858 0 +390189.36 4510.0 C57
2022-01-05 22:23:53 S 07 10 18.372 +37 31 42.10 V C57
2022-01-05 22:23:53 s 1 +23362.611 0 +390261.24 4560.0 C57
2022-01-05 22:33:53 S 07 10 16.673 +37 31 20.46 V C57
2022-01-05 22:33:53 s 1 +23005.296 0 +390332.22 4620.0 C57
2022-01-05 22:43:53 S 07 10 15.103 +37 31 00.95 V C57
2022-01-05 22:43:53 s 1 +22647.912 0 +390402.25 4700.0 C57
2022-01-05 22:53:53 S 07 10 13.344 +37 30 39.46 V C57
2022-01-05 22:53:53 s 1 +22290.459 0 +390471.35 4780.0 C57
2022-01-05 23:03:53 S 07 10 11.738 +37 30 19.19 V C57
2022-01-05 23:03:53 s 1 +21932.941 0 +390539.54 4870.0 C57
2022-01-05 23:13:53 S 07 10 10.073 +37 29 59.28 V C57
2022-01-05 23:13:53 s 1 +21575.357 0 +390606.79 4950.0 C57
2022-01-05 23:23:53 S 07 10 08.275 +37 29 36.35 V C57
2022-01-05 23:23:53 s 1 +21217.707 0 +390673.11 5030.0 C57
2022-01-05 23:33:53 S 07 10 06.694 +37 29 17.02 V C57
2022-01-05 23:33:53 s 1 +20859.994 0 +390738.52 5100.0 C57
2022-01-05 23:43:53 S 07 10 04.994 +37 28 56.14 V C57
2022-01-05 23:43:53 s 1 +20502.217 0 +390803.00 5160.0 C57
2022-01-05 23:53:53 S 07 10 03.341 +37 28 35.04 V C57
2022-01-05 23:53:53 s 1 +20144.378 0 +390866.54 5200.0 C57
2022-01-06 00:03:53 S 07 10 01.788 +37 28 14.38 V C57
2022-01-06 00:03:53 s 1 +19786.478 0 +390929.17 5220.0 C57