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
2022-01-09 04:03:53 S 06 57 28.762 +34 39 38.20 V C57
2022-01-09 04:03:53 s 1 -135650.47 1 +322877.85 5060.0 C57
2022-01-09 04:13:53 S 06 57 27.156 +34 39 16.60 V C57
2022-01-09 04:13:53 s 1 -135939.12 0 +322510.21 8820.0 C57
2022-01-09 04:23:53 S 06 57 25.584 +34 38 52.98 V C57
2022-01-09 04:23:53 s 1 -136227.35 0 +322141.55 380.0 C57
2022-01-09 04:33:53 S 06 57 23.938 +34 38 30.34 V C57
2022-01-09 04:33:53 s 1 -136515.15 9 +321771.88 9750.0 C57
2022-01-09 04:43:53 S 06 57 22.282 +34 38 05.35 V C57
2022-01-09 04:43:53 s 1 -136802.54 5 +321401.20 6920.0 C57
2022-01-09 04:53:53 S 06 57 20.650 +34 37 42.60 V C57
2022-01-09 04:53:53 s 1 -137089.50 8 +321029.51 1880.0 C57
2022-01-09 05:03:53 S 06 57 18.962 +34 37 17.36 V C57
2022-01-09 05:03:53 s 1 -137376.04 4 +320656.80 4610.0 C57
2022-01-09 05:13:53 S 06 57 17.429 +34 36 54.94 V C57
2022-01-09 05:13:53 s 1 -137662.15 3 +320283.07 5120.0 C57
2022-01-09 05:23:53 S 06 57 15.787 +34 36 31.97 V C57
2022-01-09 05:23:53 s 1 -137947.83 4 +319908.33 3400.0 C57
2022-01-09 05:33:53 S 06 57 14.213 +34 36 06.19 V C57
2022-01-09 05:33:53 s 1 -138233.08 3 +319532.57 9440.0 C57
2022-01-09 05:43:53 S 06 57 12.550 +34 35 44.16 V C57
2022-01-09 05:43:53 s 1 -138517.90 0 +319155.80 3220.0 C57
2022-01-09 05:53:53 S 06 57 10.978 +34 35 21.44 V C57
2022-01-09 05:53:53 s 1 -138802.28 3 +318778.01 4750.0 C57
2022-01-09 06:03:53 S 06 57 09.156 +34 34 56.60 V C57
2022-01-09 06:03:53 s 1 -139086.23 0 +318399.20 4020.0 C57
2022-01-09 06:13:53 S 06 57 07.788 +34 34 33.78 V C57
2022-01-09 06:13:53 s 1 -139369.73 9 +318019.37 1010.0 C57
2022-01-09 06:23:53 S 06 57 06.132 +34 34 10.38 V C57
2022-01-09 06:23:53 s 1 -139652.80 9 +317638.52 5720.0 C57
2022-01-09 06:33:53 S 06 57 04.478 +34 33 46.58 V C57
2022-01-09 06:33:53 s 1 -139935.43 8 +317256.65 8140.0 C57
2022-01-09 06:43:53 S 06 57 02.890 +34 33 22.36 V C57
2022-01-09 06:43:53 s 1 -140217.62 4 +316873.76 8270.0 C57
2022-01-09 06:53:53 S 06 57 01.207 +34 32 59.10 V C57
2022-01-09 06:53:53 s 1 -140499.36 6 +316489.85 6100.0 C57
2022-01-09 07:03:53 S 06 56 59.546 +34 32 35.88 V C57
2022-01-09 07:03:53 s 1 -140780.66 2 +316104.92 1610.0 C57
2022-01-09 07:13:53 S 06 56 57.946 +34 32 13.09 V C57
2022-01-09 07:13:53 s 1 -141061.51 0 +315718.97 4810.0 C57
2022-01-09 07:23:53 S 06 56 56.321 +34 31 48.83 V C57
2022-01-09 07:23:53 s 1 -141341.90 8 +315331.99 5670.0 C57
2022-01-09 07:33:53 S 06 56 54.780 +34 31 24.17 V C57
2022-01-09 07:33:53 s 1 -141621.85 4 +314944.00 4210.0 C57
2022-01-09 07:43:53 S 06 56 53.102 +34 31 00.80 V C57
2022-01-09 07:43:53 s 1 -141901.34 8 +314554.97 390.0 C57
2022-01-09 07:53:53 S 06 56 51.454 +34 30 36.40 V C57
2022-01-09 07:53:53 s 1 -142180.38 6 +314164.92 4230.0 C57
2022-01-09 08:03:53 S 06 56 49.920 +34 30 13.03 V C57
2022-01-09 08:03:53 s 1 -142458.96 8 +313773.85 5710.0 C57