2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2015-05-20 02:53:54 C 11 14 19.36 +01 37 45.1 u H21
2015-05-20 04:36:05 C 11 14 30.17 +01 35 29.1 q 703
2015-05-20 04:43:20 C 11 14 30.94 +01 35 19.8 q 703
2015-05-20 04:50:37 C 11 14 31.71 +01 35 09.6 q 703
2015-05-20 04:57:51 C 11 14 32.43 +01 35 00.1 q 703
2015-05-22 01:53:32 C 11 19 16.49 +00 35 53.8 u H21
2015-05-22 01:56:32 C 11 19 16.77 +00 35 50.0 u H21
2015-05-22 01:59:17 C 11 19 17.06 +00 35 46.5 u H21
2015-05-22 02:02:02 C 11 19 17.33 +00 35 43.1 u H21
2015-05-22 02:05:18 C 11 19 17.65 +00 35 39.0 u H21
2015-05-22 02:08:11 C 11 19 17.95 +00 35 35.4 u H21
2015-05-22 02:11:11 C 11 19 18.24 +00 35 31.5 u H21
2015-05-22 02:15:49 C 11 19 18.69 +00 35 25.6 u H21
2015-05-24 03:37:28 C 11 24 21.09 -00 26 03.4 q 703
2015-05-24 03:44:42 C 11 24 21.80 -00 26 11.8 q 703
2015-05-24 03:51:56 C 11 24 22.50 -00 26 20.8 q 703
2015-05-24 03:59:11 C 11 24 23.19 -00 26 29.5 q 703
2015-06-04 02:32:56 C 11 49 15.07 -05 06 34.2 u H21
2015-06-04 02:38:18 C 11 49 15.55 -05 06 39.1 u H21
2015-06-04 02:42:57 C 11 49 15.95 -05 06 43.7 u H21
2015-06-04 02:47:28 C 11 49 16.33 -05 06 47.9 u H21
2015-06-04 02:52:17 C 11 49 16.75 -05 06 52.5 u H21
2015-08-16 06:05:30 C 14 22 34.318 -23 07 18.32 L F51
2015-08-16 06:11:05 C 14 22 34.823 -23 07 20.53 L F51
2015-08-16 06:16:40 C 14 22 35.344 -23 07 23.12 L F51
2015-08-16 06:22:14 C 14 22 35.860 -23 07 25.52 L F51
2016-05-31 03:32:30 C 09 16 20.40 +19 05 07.7 q 703
2016-05-31 03:39:01 C 09 16 21.74 +19 04 58.4 q 703
2016-05-31 03:52:01 C 09 16 24.15 +19 04 41.7 q 703
2020-07-15 11:19:35 C 04 07 25.14 +17 10 26.6 U I41
2020-07-15 11:26:43 C 04 07 26.68 +17 10 34.0 U I41
2020-07-15 11:33:50 C 04 07 28.17 +17 10 41.0 U I41
2020-07-15 11:40:57 C 04 07 29.70 +17 10 48.1 U I41
2020-07-19 11:19:25 C 04 28 24.83 +18 41 35.2 U I41
2020-07-19 11:26:31 C 04 28 26.43 +18 41 41.7 U I41
2020-07-19 11:33:37 C 04 28 27.99 +18 41 48.3 U I41
2020-07-19 11:40:43 C 04 28 29.57 +18 41 54.8 U I41
2020-07-21 11:23:42 C 04 39 11.85 +19 24 18.1 U I41
2020-07-21 11:30:51 C 04 39 13.44 +19 24 24.5 U I41
2020-07-21 11:37:58 C 04 39 15.07 +19 24 31.0 U I41
2020-07-21 11:45:05 C 04 39 16.66 +19 24 36.8 U I41
2020-07-25 11:24:02 C 05 01 14.68 +20 42 42.3 U I41
2020-07-25 11:31:19 C 05 01 16.37 +20 42 47.9 U I41
2020-07-25 11:38:36 C 05 01 18.06 +20 42 53.4 U I41
2020-07-25 11:45:54 C 05 01 19.76 +20 42 59.1 U I41
2020-07-31 11:47:05 C 05 35 33.72 +22 20 08.0 U I41
2020-08-06 11:43:48 C 06 10 53.35 +23 28 14.9 U I41
2020-08-06 11:50:54 C 06 10 55.10 +23 28 17.7 U I41
2020-08-06 11:57:59 C 06 10 56.88 +23 28 20.1 U I41
2020-08-06 12:05:05 C 06 10 58.62 +23 28 23.2 U I41
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)