4688 (1980 WF)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5178619886 ± 4.28e-02
Semi-major axis (a)2.2330665867 AU ± 3.10e-02
Inclination (i)6.37494837° ± 1.57e+00
Long. of Asc. Node (Ω)241.22626370° ± 6.84e+00
Arg. of Perihelion (ω)213.83190802° ± 7.91e+00
Mean Anomaly (M)163.45964872° ± 1.49e+01
Mean Motion (n)0.2953654999°/day ± 6.15e-03
Perihelion dist (q)1.07664628 AU ± 9.67e-02
Aphelion dist (Q)3.38948689 AU ± 1.07e-01
Orbital Period3.33697160 yr ± 6.95e-02
NGA Modelr2
A2-2.87149907e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.445″
Uncertainty0
Orbit TypeAmor
MOID0.107829 AU
Observations Used317
Oppositions29
Arc Total1980-2021
First Observation Used1980-11-29
Last Observation Used2021-04-07
Observations (339)
Date Type RA Dec Mag Band Observatory
1980-11-29 05:03:59 A 03 53 03.58 +16 14 18.8 15.5 675
1980-11-29 06:18:59 A 03 53 13.14 +16 11 53.1 675
1980-12-01 05:01:59 A 04 00 06.54 +14 37 49.5 15.5 675
1980-12-01 06:17:00 A 04 00 16.76 +14 35 15.4 675
1980-12-03 06:20:00 A 04 07 51.66 +12 51 18.9 15.5 675
1980-12-12 04:59:59 A 04 47 51.43 +03 55 46.4 16.8 688
1980-12-14 06:31:00 A 04 58 18.53 +01 42 49.2 15.5 675
1980-12-14 07:00:59 A 04 58 24.23 +01 41 31.5 15.5 675
1980-12-28 10:45:59 A 06 14 46.51 -11 45 29.6 474
1980-12-28 11:23:00 A 06 14 54.23 -11 46 37.7 16.1 474
1981-01-03 12:05:40 A 06 44 59.85 -15 23 01.3 474
1981-01-03 12:43:10 A 06 45 06.48 -15 23 48.4 474
1981-01-09 05:20:43 A 07 10 05.78 -17 26 36.3 A 801
1981-02-04 05:19:07 A 08 23 06.24 -15 37 05.4 19.0 A 801
1981-02-08 12:44:01 A 08 30 41.73 -14 22 40.5 474
1981-02-08 13:20:21 A 08 30 43.75 -14 22 16.0 474
1981-02-10 04:49:16 A 08 33 27.07 -13 53 14.6 A 801
1981-02-28 03:54:16 A 08 59 30.66 -08 17 41.9 19.0 A 801
1990-11-13 06:17:59 A 02 37 45.77 +23 22 56.1 18.0 675
1990-11-13 07:12:44 A 02 37 47.47 +23 22 10.7 675
1990-11-17 07:38:14 A 02 42 22.95 +21 48 57.2 675
1990-11-17 08:23:14 A 02 42 24.78 +21 48 08.6 675
1990-12-26 16:07:39 A 05 00 51.73 -08 04 28.1 413
1990-12-26 16:22:20 A 05 00 55.02 -08 04 56.1 413
1990-12-27 16:56:49 A 05 06 37.38 -08 51 03.4 413
1990-12-27 17:04:19 A 05 06 39.07 -08 51 16.6 413
1991-01-06 12:38:59 A 06 00 33.99 -14 24 04.9 413
1991-01-07 12:18:58 A 06 05 41.28 -14 45 42.5 413
1991-01-11 11:43:52 A 06 25 25.20 -15 51 18.8 17.2 474
1991-01-11 11:54:52 A 06 25 27.30 -15 51 25.0 474
1991-01-14 04:17:36 A 06 37 53.57 -16 18 52.8 801
2000-10-02 08:10:13 C 01 32 20.63 +23 50 51.9 z 711
2000-10-02 08:29:06 C 01 32 20.36 +23 50 52.8 z 711
2000-10-21 05:35:47 C 01 24 23.97 +22 54 39.8 i 649
2000-10-21 05:46:01 C 01 24 23.83 +22 54 35.1 i 649
2000-10-21 05:59:35 C 01 24 23.40 +22 54 28.5 i 649
2000-10-25 07:06:01 C 01 21 52.58 +22 15 24.2 18.5 c 704
2000-10-25 07:25:39 C 01 21 51.91 +22 15 15.7 18.7 c 704
2000-10-25 07:45:21 C 01 21 51.21 +22 15 05.4 18.5 c 704
2000-10-25 08:25:18 C 01 21 50.00 +22 14 46.9 18.4 c 704
2000-11-01 05:24:25 C 01 17 44.94 +20 42 55.6 17.8 c 704
2000-11-01 05:44:43 C 01 17 44.33 +20 42 42.1 18.3 c 704
2000-11-01 06:05:00 C 01 17 43.70 +20 42 28.8 18.2 c 704
2000-11-01 06:26:34 C 01 17 43.13 +20 42 15.1 18.4 c 704
2000-11-01 06:47:31 C 01 17 42.50 +20 42 00.8 18.1 c 704
2000-11-17 22:36:46 C 01 14 25.58 +14 57 57.5 17.9 i 941
2000-11-18 21:32:55 C 01 14 44.50 +14 33 54.8 17.9 i 941
2000-11-18 21:39:36 C 01 14 44.71 +14 33 50.4 17.9 i 941
2000-11-19 04:03:38 C 01 14 51.37 +14 27 09.0 c 670
2000-11-19 05:55:31 C 01 14 52.12 +14 25 10.1 c 670