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 07:03:53 S 07 12 50.887 +38 02 58.09 V C57
2022-01-05 07:03:53 s 1 +55822.635 0 +379735.47 1180.0 C57
2022-01-05 07:13:53 S 07 12 49.258 +38 02 38.58 V C57
2022-01-05 07:13:53 s 1 +55475.486 0 +379892.76 8990.0 C57
2022-01-05 07:23:53 S 07 12 47.587 +38 02 18.42 V C57
2022-01-05 07:23:53 s 1 +55128.184 0 +380049.10 6420.0 C57
2022-01-05 07:33:53 S 07 12 46.030 +38 01 57.79 V C57
2022-01-05 07:33:53 s 1 +54780.732 0 +380204.50 3480.0 C57
2022-01-05 07:43:53 S 07 12 44.316 +38 01 37.42 V C57
2022-01-05 07:43:53 s 1 +54433.127 0 +380358.94 160.0 C57
2022-01-05 07:53:53 S 07 12 42.701 +38 01 16.97 V C57
2022-01-05 07:53:53 s 1 +54085.370 0 +380512.43 6480.0 C57
2022-01-05 08:03:53 S 07 12 40.949 +38 00 58.00 V C57
2022-01-05 08:03:53 s 1 +53737.467 0 +380664.98 2430.0 C57
2022-01-05 08:13:53 S 07 12 39.358 +38 00 37.80 V C57
2022-01-05 08:13:53 s 1 +53389.414 0 +380816.56 8020.0 C57
2022-01-05 08:23:53 S 07 12 37.651 +38 00 17.57 V C57
2022-01-05 08:23:53 s 1 +53041.212 0 +380967.20 3260.0 C57
2022-01-05 08:33:53 S 07 12 36.070 +37 59 57.84 V C57
2022-01-05 08:33:53 s 1 +52692.867 0 +381116.90 8150.0 C57
2022-01-05 08:43:53 S 07 12 34.327 +37 59 37.72 V C57
2022-01-05 08:43:53 s 1 +52344.374 0 +381265.64 2690.0 C57
2022-01-05 08:53:53 S 07 12 32.746 +37 59 16.58 V C57
2022-01-05 08:53:53 s 1 +51995.736 0 +381413.43 6880.0 C57
2022-01-05 09:03:53 S 07 12 31.145 +37 58 56.89 V C57
2022-01-05 09:03:53 s 1 +51646.958 0 +381560.28 740.0 C57
2022-01-05 09:13:53 S 07 12 29.400 +37 58 36.16 V C57
2022-01-05 09:13:53 s 1 +51298.034 0 +381706.17 4270.0 C57
2022-01-05 09:23:53 S 07 12 27.722 +37 58 16.93 V C57
2022-01-05 09:23:53 s 1 +50948.968 0 +381851.12 7460.0 C57
2022-01-05 09:33:53 S 07 12 26.141 +37 57 57.20 V C57
2022-01-05 09:33:53 s 1 +50599.765 0 +381995.13 330.0 C57
2022-01-05 09:43:53 S 07 12 24.355 +37 57 36.14 V C57
2022-01-05 09:43:53 s 1 +50250.419 0 +382138.18 2880.0 C57
2022-01-05 09:53:53 S 07 12 22.884 +37 57 15.84 V C57
2022-01-05 09:53:53 s 1 +49900.935 0 +382280.28 5110.0 C57
2022-01-05 10:03:53 S 07 12 21.077 +37 56 55.28 V C57
2022-01-05 10:03:53 s 1 +49551.315 0 +382421.46 7030.0 C57
2022-01-05 10:13:53 S 07 12 19.507 +37 56 35.84 V C57
2022-01-05 10:13:53 s 1 +49201.556 0 +382561.67 8630.0 C57
2022-01-05 10:23:53 S 07 12 17.856 +37 56 14.86 V C57
2022-01-05 10:23:53 s 1 +48851.661 0 +382700.93 9930.0 C57
2022-01-05 10:33:53 S 07 12 16.157 +37 55 54.37 V C57
2022-01-05 10:33:53 s 1 +48501.634 0 +382839.27 940.0 C57
2022-01-05 10:43:53 S 07 12 14.580 +37 55 34.82 V C57
2022-01-05 10:43:53 s 1 +48151.470 0 +382976.64 1640.0 C57
2022-01-05 10:53:53 S 07 12 12.778 +37 55 14.56 V C57
2022-01-05 10:53:53 s 1 +47801.173 0 +383113.07 2050.0 C57
2022-01-05 11:03:53 S 07 12 11.090 +37 54 54.11 V C57
2022-01-05 11:03:53 s 1 +47450.747 0 +383248.57 2180.0 C57