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
2022-01-04 14:23:53 S 07 15 35.971 +38 35 53.99 V C57
2022-01-04 14:23:53 s 1 +89586.299 0 +359131.03 3510.0 C57
2022-01-04 14:33:53 S 07 15 34.320 +38 35 34.19 V C57
2022-01-04 14:33:53 s 1 +89259.782 0 +359385.62 2250.0 C57
2022-01-04 14:43:53 S 07 15 32.700 +38 35 15.00 V C57
2022-01-04 14:43:53 s 1 +88932.999 0 +359639.19 120.0 C57
2022-01-04 14:53:53 S 07 15 31.159 +38 34 55.52 V C57
2022-01-04 14:53:53 s 1 +88605.954 0 +359891.76 7140.0 C57
2022-01-04 15:03:53 S 07 15 29.414 +38 34 36.26 V C57
2022-01-04 15:03:53 s 1 +88278.654 0 +360143.35 3340.0 C57
2022-01-04 15:13:53 S 07 15 27.814 +38 34 16.72 V C57
2022-01-04 15:13:53 s 1 +87951.092 0 +360393.94 8700.0 C57
2022-01-04 15:23:53 S 07 15 26.143 +38 33 56.74 V C57
2022-01-04 15:23:53 s 1 +87623.272 0 +360643.52 3220.0 C57
2022-01-04 15:33:53 S 07 15 24.492 +38 33 37.58 V C57
2022-01-04 15:33:53 s 1 +87295.200 0 +360892.13 6940.0 C57
2022-01-04 15:43:53 S 07 15 22.841 +38 33 17.46 V C57
2022-01-04 15:43:53 s 1 +86966.870 0 +361139.73 9830.0 C57
2022-01-04 15:53:53 S 07 15 21.228 +38 32 59.14 V C57
2022-01-04 15:53:53 s 1 +86638.285 0 +361386.34 1900.0 C57
2022-01-04 16:03:53 S 07 15 19.589 +38 32 39.52 V C57
2022-01-04 16:03:53 s 1 +86309.452 0 +361631.97 3180.0 C57
2022-01-04 16:13:53 S 07 15 17.911 +38 32 20.33 V C57
2022-01-04 16:13:53 s 1 +85980.364 0 +361876.60 3640.0 C57
2022-01-04 16:23:53 S 07 15 16.289 +38 31 59.66 V C57
2022-01-04 16:23:53 s 1 +85651.025 0 +362120.23 3310.0 C57
2022-01-04 16:33:53 S 07 15 14.549 +38 31 40.37 V C57
2022-01-04 16:33:53 s 1 +85321.442 0 +362362.88 2200.0 C57
2022-01-04 16:43:53 S 07 15 12.996 +38 31 21.47 V C57
2022-01-04 16:43:53 s 1 +84991.608 0 +362604.54 280.0 C57
2022-01-04 16:53:53 S 07 15 11.215 +38 31 01.42 V C57
2022-01-04 16:53:53 s 1 +84661.526 0 +362845.19 7590.0 C57
2022-01-04 17:03:53 S 07 15 09.643 +38 30 42.16 V C57
2022-01-04 17:03:53 s 1 +84331.203 0 +363084.88 4130.0 C57
2022-01-04 17:13:53 S 07 15 07.954 +38 30 23.62 V C57
2022-01-04 17:13:53 s 1 +84000.633 0 +363323.57 9890.0 C57
2022-01-04 17:23:53 S 07 15 06.463 +38 30 03.67 V C57
2022-01-04 17:23:53 s 1 +83669.818 0 +363561.26 4870.0 C57
2022-01-04 17:33:53 S 07 15 04.697 +38 29 43.62 V C57
2022-01-04 17:33:53 s 1 +83338.766 0 +363797.98 9110.0 C57
2022-01-04 17:43:53 S 07 15 03.062 +38 29 24.36 V C57
2022-01-04 17:43:53 s 1 +83007.470 0 +364033.71 2590.0 C57
2022-01-04 17:53:53 S 07 15 01.529 +38 29 04.45 V C57
2022-01-04 17:53:53 s 1 +82675.934 0 +364268.44 5300.0 C57
2022-01-04 18:03:53 S 07 14 59.786 +38 28 45.26 V C57
2022-01-04 18:03:53 s 1 +82344.164 0 +364502.20 7290.0 C57
2022-01-04 18:13:53 S 07 14 58.092 +38 28 26.54 V C57
2022-01-04 18:13:53 s 1 +82012.153 0 +364734.96 8520.0 C57
2022-01-04 18:23:53 S 07 14 56.498 +38 28 05.88 V C57
2022-01-04 18:23:53 s 1 +81679.905 0 +364966.74 9010.0 C57