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
2022-01-08 18:35:31 B 06 59 07.09 +34 54 41.4 V O47
2022-01-08 18:43:53 S 06 59 00.168 +35 01 28.06 V C57
2022-01-08 18:43:53 s 1 -118865.81 6 +341866.50 2030.0 C57
2022-01-08 18:51:03 B 06 59 04.58 +34 54 06.0 V O47
2022-01-08 18:53:53 S 06 58 58.394 +35 01 04.94 V C57
2022-01-08 18:53:53 s 1 -119175.45 7 +341554.71 7110.0 C57
2022-01-08 19:03:53 S 06 58 56.789 +35 00 41.11 V C57
2022-01-08 19:03:53 s 1 -119484.76 4 +341241.94 380.0 C57
2022-01-08 19:13:53 S 06 58 55.135 +35 00 18.76 V C57
2022-01-08 19:13:53 s 1 -119793.73 6 +340928.18 1850.0 C57
2022-01-08 19:23:53 S 06 58 53.530 +34 59 54.71 V C57
2022-01-08 19:23:53 s 1 -120102.36 9 +340613.44 1500.0 C57
2022-01-08 19:33:53 S 06 58 51.924 +34 59 30.91 V C57
2022-01-08 19:33:53 s 1 -120410.66 4 +340297.71 9320.0 C57
2022-01-08 19:43:53 S 06 58 50.340 +34 59 07.84 V C57
2022-01-08 19:43:53 s 1 -120718.61 9 +339981.00 5310.0 C57
2022-01-08 19:53:53 S 06 58 48.682 +34 58 45.66 V C57
2022-01-08 19:53:53 s 1 -121026.23 2 +339663.31 9470.0 C57
2022-01-08 20:03:53 S 06 58 47.050 +34 58 22.55 V C57
2022-01-08 20:03:53 s 1 -121333.50 3 +339344.62 1780.0 C57
2022-01-08 20:13:53 S 06 58 45.425 +34 57 58.57 V C57
2022-01-08 20:13:53 s 1 -121640.42 9 +339024.95 2240.0 C57
2022-01-08 20:23:53 S 06 58 43.766 +34 57 34.45 V C57
2022-01-08 20:23:53 s 1 -121947.00 9 +338704.29 850.0 C57
2022-01-08 20:33:53 S 06 58 42.142 +34 57 10.69 V C57
2022-01-08 20:33:53 s 1 -122253.24 2 +338382.64 7590.0 C57
2022-01-08 20:53:53 S 06 58 38.760 +34 56 25.80 V C57
2022-01-08 20:53:53 s 1 -122864.66 0 +337736.38 5470.0 C57
2022-01-08 21:03:53 S 06 58 37.272 +34 55 57.68 V C57
2022-01-08 21:03:53 s 1 -123169.84 3 +337411.77 6580.0 C57
2022-01-08 21:13:53 S 06 58 35.897 +34 55 41.16 V C57
2022-01-08 21:13:53 s 1 -123474.67 2 +337086.17 5810.0 C57
2022-01-08 21:23:53 S 06 58 34.022 +34 55 15.85 V C57
2022-01-08 21:23:53 s 1 -123779.14 8 +336759.57 3150.0 C57
2022-01-08 21:33:53 S 06 58 32.316 +34 54 51.59 V C57
2022-01-08 21:33:53 s 1 -124083.26 7 +336431.99 8580.0 C57
2022-01-08 21:43:53 S 06 58 30.614 +34 54 29.34 V C57
2022-01-08 21:43:53 s 1 -124387.02 9 +336103.41 2110.0 C57
2022-01-08 21:53:53 S 06 58 29.066 +34 54 05.33 V C57
2022-01-08 21:53:53 s 1 -124690.43 3 +335773.84 3720.0 C57
2022-01-08 22:03:53 S 06 58 27.377 +34 53 42.65 V C57
2022-01-08 22:03:53 s 1 -124993.47 6 +335443.28 3410.0 C57
2022-01-08 22:13:53 S 06 58 25.846 +34 53 19.32 V C57
2022-01-08 22:13:53 s 1 -125296.15 8 +335111.73 1170.0 C57
2022-01-08 23:23:53 S 06 58 14.273 +34 50 34.62 V C57
2022-01-08 23:23:53 s 1 -127404.68 0 +332763.01 950.0 C57
2022-01-08 23:33:53 S 06 58 12.766 +34 50 12.59 V C57
2022-01-08 23:33:53 s 1 -127704.41 5 +332423.49 3040.0 C57
2022-01-08 23:43:53 S 06 58 11.107 +34 49 49.51 V C57
2022-01-08 23:43:53 s 1 -128003.77 5 +332082.98 3150.0 C57