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
2022-01-06 18:13:53 S 07 07 00.646 +36 49 52.18 V C57
2022-01-06 18:13:53 s 1 -19402.411 0 +392232.76 9960.0 C57
2022-01-06 18:23:53 S 07 06 59.016 +36 49 30.68 V C57
2022-01-06 18:23:53 s 1 -19761.838 0 +392194.22 4520.0 C57
2022-01-06 18:33:53 S 07 06 57.252 +36 49 09.44 V C57
2022-01-06 18:33:53 s 1 -20121.230 0 +392154.76 8640.0 C57
2022-01-06 18:43:53 S 07 06 55.558 +36 48 47.05 V C57
2022-01-06 18:43:53 s 1 -20480.589 0 +392114.39 2310.0 C57
2022-01-06 18:53:53 S 07 06 53.911 +36 48 26.75 V C57
2022-01-06 18:53:53 s 1 -20839.912 0 +392073.10 5530.0 C57
2022-01-06 20:23:53 S 07 06 39.043 +36 45 12.78 V C57
2022-01-06 20:23:53 s 1 -24072.101 0 +391660.25 3680.0 C57
2022-01-06 20:33:53 S 07 06 37.435 +36 44 50.42 V C57
2022-01-06 20:33:53 s 1 -24431.026 0 +391609.80 2190.0 C57
2022-01-06 20:43:53 S 07 06 35.784 +36 44 29.22 V C57
2022-01-06 20:43:53 s 1 -24789.906 0 +391558.42 210.0 C57
2022-01-06 20:53:53 S 07 06 34.022 +36 44 08.52 V C57
2022-01-06 20:53:53 s 1 -25148.741 0 +391506.13 7740.0 C57
2022-01-06 21:03:53 S 07 06 32.395 +36 43 46.27 V C57
2022-01-06 21:03:53 s 1 -25507.530 0 +391452.93 4770.0 C57
2022-01-06 21:13:53 S 07 06 30.778 +36 43 25.64 V C57
2022-01-06 21:13:53 s 1 -25866.271 0 +391398.80 1290.0 C57
2022-01-06 21:23:53 S 07 06 28.987 +36 43 03.18 V C57
2022-01-06 21:23:53 s 1 -26224.965 0 +391343.76 7310.0 C57
2022-01-06 21:33:53 S 07 06 27.492 +36 42 41.44 V C57
2022-01-06 21:33:53 s 1 -26583.609 0 +391287.80 2820.0 C57
2022-01-06 21:43:53 S 07 06 25.790 +36 42 20.56 V C57
2022-01-06 21:43:53 s 1 -26942.204 0 +391230.93 7810.0 C57
2022-01-06 21:53:53 S 07 06 24.130 +36 41 59.10 V C57
2022-01-06 21:53:53 s 1 -27300.749 0 +391173.14 2280.0 C57
2022-01-06 22:03:53 S 07 06 22.428 +36 41 36.89 V C57
2022-01-06 22:03:53 s 1 -27659.241 0 +391114.43 6230.0 C57
2022-01-06 22:13:53 S 07 06 20.839 +36 41 15.00 V C57
2022-01-06 22:13:53 s 1 -28017.682 0 +391054.80 9650.0 C57
2022-01-06 22:23:53 S 07 06 19.056 +36 40 53.00 V C57
2022-01-06 22:23:53 s 1 -28376.069 0 +390994.26 2540.0 C57
2022-01-06 22:33:53 S 07 06 17.501 +36 40 32.99 V C57
2022-01-06 22:33:53 s 1 -28734.403 0 +390932.80 4900.0 C57
2022-01-06 22:43:53 S 07 06 15.797 +36 40 10.70 V C57
2022-01-06 22:43:53 s 1 -29092.681 0 +390870.42 6720.0 C57
2022-01-06 22:53:53 S 07 06 14.167 +36 39 49.68 V C57
2022-01-06 22:53:53 s 1 -29450.904 0 +390807.12 7990.0 C57
2022-01-06 23:03:53 S 07 06 12.372 +36 39 26.03 V C57
2022-01-06 23:03:53 s 1 -29809.070 0 +390742.91 8720.0 C57
2022-01-06 23:13:53 S 07 06 10.750 +36 39 04.86 V C57
2022-01-06 23:13:53 s 1 -30167.178 0 +390677.78 8900.0 C57
2022-01-06 23:23:53 S 07 06 09.079 +36 38 43.87 V C57
2022-01-06 23:23:53 s 1 -30525.228 0 +390611.73 8530.0 C57
2022-01-06 23:33:53 S 07 06 07.411 +36 38 22.34 V C57
2022-01-06 23:33:53 s 1 -30883.219 0 +390544.77 7600.0 C57