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
2022-01-03 20:43:53 S 07 18 29.503 +39 09 32.87 V C57
2022-01-03 20:43:53 s 1 +122441.24 2 +326366.55 8290.0 C57
2022-01-03 20:53:53 S 07 18 27.802 +39 09 14.18 V C57
2022-01-03 20:53:53 s 1 +122150.20 5 +326730.43 9710.0 C57
2022-01-03 21:03:53 S 07 18 26.256 +39 08 54.78 V C57
2022-01-03 21:03:53 s 1 +121858.76 2 +327093.26 9660.0 C57
2022-01-03 21:13:53 S 07 18 24.715 +39 08 36.96 V C57
2022-01-03 21:13:53 s 1 +121566.89 9 +327455.00 8090.0 C57
2022-01-03 21:23:53 S 07 18 22.987 +39 08 17.63 V C57
2022-01-03 21:23:53 s 1 +121274.62 4 +327815.67 5050.0 C57
2022-01-03 21:33:53 S 07 18 21.348 +39 07 58.76 V C57
2022-01-03 21:33:53 s 1 +120981.94 7 +328175.29 550.0 C57
2022-01-03 21:43:53 S 07 18 19.706 +39 07 39.72 V C57
2022-01-03 21:43:53 s 1 +120688.85 7 +328533.83 4570.0 C57
2022-01-03 21:53:53 S 07 18 18.060 +39 07 20.60 V C57
2022-01-03 21:53:53 s 1 +120395.35 8 +328891.30 7120.0 C57
2022-01-03 22:03:53 S 07 18 16.536 +39 07 03.04 V C57
2022-01-03 22:03:53 s 1 +120101.46 3 +329247.73 8250.0 C57
2022-01-03 22:13:53 S 07 18 14.892 +39 06 43.96 V C57
2022-01-03 22:13:53 s 1 +119807.16 0 +329603.08 7910.0 C57
2022-01-03 22:23:53 S 07 18 13.210 +39 06 25.16 V C57
2022-01-03 22:23:53 s 1 +119512.45 3 +329957.35 6130.0 C57
2022-01-03 22:33:53 S 07 18 11.575 +39 06 06.52 V C57
2022-01-03 22:33:53 s 1 +119217.35 5 +330310.59 2940.0 C57
2022-01-03 22:43:53 S 07 18 09.946 +39 05 47.47 V C57
2022-01-03 22:43:53 s 1 +118921.85 3 +330662.75 8310.0 C57
2022-01-03 22:53:53 S 07 18 08.256 +39 05 29.40 V C57
2022-01-03 22:53:53 s 1 +118625.95 4 +331013.84 2250.0 C57
2022-01-03 23:03:53 S 07 18 06.756 +39 05 09.60 V C57
2022-01-03 23:03:53 s 1 +118329.66 7 +331363.90 4810.0 C57
2022-01-03 23:13:53 S 07 18 05.179 +39 04 52.36 V C57
2022-01-03 23:13:53 s 1 +118032.98 2 +331712.87 5940.0 C57
2022-01-03 23:23:53 S 07 18 03.470 +39 04 32.34 V C57
2022-01-03 23:23:53 s 1 +117735.90 4 +332060.79 5670.0 C57
2022-01-03 23:33:53 S 07 18 01.802 +39 04 14.23 V C57
2022-01-03 23:33:53 s 1 +117438.44 4 +332407.67 4040.0 C57
2022-01-03 23:43:53 S 07 18 00.202 +39 03 54.79 V C57
2022-01-03 23:43:53 s 1 +117140.59 0 +332753.47 1000.0 C57
2022-01-03 23:53:53 S 07 17 58.584 +39 03 36.65 V C57
2022-01-03 23:53:53 s 1 +116842.34 8 +333098.22 6590.0 C57
2022-01-04 00:03:53 S 07 17 56.909 +39 03 18.25 V C57
2022-01-04 00:03:53 s 1 +116543.72 9 +333441.93 820.0 C57
2022-01-04 00:13:53 S 07 17 55.368 +39 02 59.21 V C57
2022-01-04 00:13:53 s 1 +116244.72 1 +333784.57 3680.0 C57
2022-01-04 00:23:53 S 07 17 53.621 +39 02 40.60 V C57
2022-01-04 00:23:53 s 1 +115945.33 0 +334126.15 5170.0 C57
2022-01-04 00:33:53 S 07 17 52.018 +39 02 20.51 V C57
2022-01-04 00:33:53 s 1 +115645.56 6 +334466.70 5340.0 C57
2022-01-04 00:43:53 S 07 17 50.333 +39 02 01.54 V C57
2022-01-04 00:43:53 s 1 +115345.41 7 +334806.18 4150.0 C57