4947 Ninkasi (1988 TJ1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1684400316 ± 2.00e+00
Semi-major axis (a)1.3701127590 AU ± 3.00e+00
Inclination (i)15.65180501° ± 4.00e+00
Long. of Asc. Node (Ω)215.42213933° ± 5.00e+00
Arg. of Perihelion (ω)192.96274282° ± 6.00e+00
Mean Anomaly (M)30.35999586° ± 8.59e-06
Mean Motion (n)0.6145791326°/day ± 2.02e+00
Perihelion dist (q)1.13933092 AU ± 3.71e+00
Aphelion dist (Q)1.60089460 AU ± 4.45e+00
Orbital Period1.60374186 yr ± 5.27e+00
NGA Modelr2
A2-1.97295877e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.365″
Uncertainty0
Orbit TypeAmor
MOID0.148389 AU
Observations Used954
Oppositions18
Arc Total1978-2026
First Observation Used1978-02-17
Last Observation Used2026-03-26
Observations (999)
Date Type RA Dec Mag Band Observatory
1978-02-17 17:19:25 13 16 00.91 -31 50 18.9 260
1978-02-17 18:19:25 13 16 01.46 -31 50 22.0 260
1980-12-08 12:20:39 A 03 28 36.05 -27 56 11.2 413
1980-12-11 13:05:14 A 03 31 42.97 -28 24 13.1 413
1988-10-12 07:00:29 A 00 05 39.82 +33 50 44.7 17.0 675
1988-10-12 07:36:14 A 00 05 41.75 +33 49 02.0 675
1988-10-13 05:38:14 A 00 07 07.76 +32 46 21.2 17.0 675
1988-11-03 11:47:55 A 00 49 51.40 +01 50 37.1 17.0 413
1988-11-03 13:02:54 A 00 49 57.61 +01 46 11.0 413
1988-11-04 05:49:44 A 00 51 36.51 +00 44 56.7 17.5 675
1988-11-06 07:38:00 A 00 56 28.92 -02 07 42.7 675
1989-01-18 04:13:43 A 03 46 46.24 -19 22 44.7 675
1989-01-18 04:21:49 A 03 46 47.01 -19 22 39.9 675
1989-01-18 04:32:49 A 03 46 48.02 -19 22 32.7 675
1991-05-11 06:46:28 A 17 06 58.87 -06 07 51.3 801
1991-05-11 08:09:25 A 17 06 55.42 -06 06 24.8 D 691
1991-05-11 08:38:25 A 17 06 54.03 -06 05 54.3 D 691
1991-05-12 08:03:41 A 17 05 50.36 -05 41 28.6 D 691
1991-05-13 09:05:24 C 17 04 39.26 -05 15 20.6 a 691
1991-05-13 09:11:51 C 17 04 38.93 -05 15 13.1 a 691
1991-05-13 09:49:15 C 17 04 36.99 -05 14 34.7 a 691
1991-05-16 05:36:46 A 17 01 10.07 -04 03 44.7 801
1991-05-16 05:49:20 A 17 01 09.33 -04 03 31.1 801
1996-06-21 18:28:14 C 21 53 57.04 +20 55 17.1 413
1996-06-21 18:32:04 C 21 53 57.23 +20 55 22.6 413
1996-08-21 08:31:19 C 22 18 17.27 +44 25 52.9 i 711
1996-08-21 08:47:46 C 22 18 16.84 +44 25 59.3 i 711
1996-09-07 17:51:38 C 22 08 51.34 +44 41 50.7 381
1996-09-07 17:55:01 C 22 08 51.24 +44 41 49.0 381
1996-09-07 18:00:01 C 22 08 51.13 +44 41 47.6 381
1996-09-22 05:08:38 C 22 05 47.94 +40 06 32.5 i 711
1996-09-22 06:10:09 C 22 05 47.75 +40 05 14.7 i 711
1996-09-30 07:11:15 C 22 09 34.30 +35 11 05.2 c 608
1996-09-30 08:06:39 C 22 09 35.41 +35 09 25.3 c 608
1996-10-01 07:43:59 C 22 10 23.33 +34 25 56.7 c 608
1996-10-01 08:46:23 C 22 10 24.79 +34 23 59.7 c 608
1996-10-10 20:37:02 C 22 22 05.68 +26 02 39.7 z 118
1996-10-10 20:40:47 C 22 22 05.91 +26 02 30.2 z 118
1996-10-10 20:51:08 C 22 22 06.52 +26 02 03.8 z 118
1996-10-13 04:16:13 C 22 26 03.52 +23 40 20.3 i 711
1996-10-13 04:22:09 C 22 26 03.91 +23 40 04.6 i 711
1996-10-13 18:43:57 C 22 27 10.34 +23 02 02.3 z 118
1996-10-13 18:46:20 C 22 27 10.51 +23 01 55.9 z 118
1996-10-13 18:52:03 C 22 27 10.90 +23 01 41.0 z 118
1996-10-15 01:40:33 C 22 29 36.71 +21 39 15.0 z 801
1996-10-15 01:51:27 C 22 29 37.45 +21 38 46.6 z 801
1996-10-25 18:34:35 C 22 54 34.91 +09 31 49.1 z 595
1996-10-25 18:42:13 C 22 54 35.65 +09 31 28.0 z 595
1996-10-25 21:23:12 C 22 54 52.21 +09 23 45.6 z 118
1996-10-25 21:31:26 C 22 54 53.07 +09 23 22.1 z 118