2021 TD3

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.1378709280 ± 6.94e-05
Semi-major axis (a)	1.4373193488 AU ± 1.62e-04
Inclination (i)	27.40854514° ± 4.38e-03
Long. of Asc. Node (Ω)	357.68091586° ± 9.41e-04
Arg. of Perihelion (ω)	0.24043430° ± 6.62e-03
Mean Anomaly (M)	146.28295843° ± 1.42e-01
Mean Motion (n)	0.5719820082°/day ± 9.67e-05
Perihelion dist (q)	1.23915480 AU ± 1.72e-04
Aphelion dist (Q)	1.63548390 AU ± 2.10e-04
Orbital Period	1.72317707 yr ± 2.91e-04

Physical Parameters

H (abs. magnitude)	23.15
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-06-02
RMS Residual	0.180″
Uncertainty	3
Orbit Type	Amor
MOID	0.233134 AU
Observations Used	14
Oppositions	1
Arc Total	2021-2021
First Observation Used	2021-09-28
Last Observation Used	2021-10-14

Observations (15)

Date	Type	RA	Dec	Mag	Band	Observatory
2021-09-28 08:38:07	C	22 09 38.140	-10 56 03.10	–	V	F51
2021-09-28 08:55:50	C	22 09 35.758	-10 55 01.14	–	V	F51
2021-09-28 09:13:32	C	22 09 33.367	-10 53 59.06	–	V	F51
2021-10-04 05:34:03	C	21 54 36.463	-03 14 35.66	–	U	F52
2021-10-04 05:51:36	C	21 54 34.764	-03 13 41.87	–	U	F52
2021-10-04 06:09:02	C	21 54 32.984	-03 12 48.42	–	U	F52
2021-10-04 06:26:27	C	21 54 31.435	-03 11 56.64	–	U	F52
2021-10-04 08:33:34	C	21 54 19.267	-03 05 32.45	–	V	F51
2021-10-04 08:35:17	C	21 54 19.087	-03 05 27.07	–	V	F51
2021-10-05 00:57:59	C	21 52 55.88	-02 16 06.0	–	V	807
2021-10-05 01:08:04	C	21 52 54.92	-02 15 35.2	–	V	807
2021-10-05 01:28:00	C	21 52 53.16	-02 14 37.3	–	V	807
2021-10-14 00:10:08	C	21 40 07.41	+06 56 45.6	–	V	807
2021-10-14 00:30:20	C	21 40 06.54	+06 57 30.2	–	V	807
2021-10-14 01:10:12	C	21 40 04.78	+06 58 57.6	–	V	807