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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .0760090265983052 | 4.819e-12 | |
| a | 2.769165148633284 | 1.0328e-11 | au |
| q | 2.558683601195717 | 1.9569e-11 | au |
| i | 10.59406719506626 | 4.6089e-09 | deg |
| node | 80.30553090445737 | 6.1688e-08 | deg |
| peri | 73.59769469844186 | 6.6248e-08 | deg |
| M | 77.37209751948711 | 7.8207e-09 | deg |
| tp | 2458238.754129317955
(2018-Apr-30.25412932) | 3.7829e-08 | TDB |
| period | 1683.145702657688
4.61 | 9.4159e-09
2.578e-11 | d
yr |
| n | .2138852265918273 | 1.1965e-12 | deg/d |
| Q | 2.979646696070851 | 1.1113e-11 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
3.4 |
|
n/a |
MPO492748 |
IRAS observations used: 15 |
| magnitude slope |
G |
0.12 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
| diameter |
diameter |
939.4 |
km |
0.2 |
Nature vol. 537, pp515-517 (22 September 2016) |
|
| extent |
extent |
964.4 x 964.2 x 891.8 |
km |
0.2 x 0.2 x 0.2 |
Nature vol. 537, pp515-517 (22 September 2016) |
fit w.r.t. center of mass and in body-fixed frame |
| GM |
GM |
62.6284 |
km^3/s^2 |
0.0009 |
Nature vol. 537, pp515-517 (22 September 2016) |
|
| bulk density |
density |
2.162 |
g/cm^3 |
0.008 |
Nature vol. 537, pp515-517 (22 September 2016) |
|
| rotation period |
rot_per |
9.074170 |
h |
0.000001 |
Nature vol. 537, pp515-517 (22 September 2016) |
derived from published value: 952.1532 +/- 0.0001 deg./day |
| pole direction |
pole |
291.421/66.758 |
|
0.007/0.002 |
Nature vol. 537, pp515-517 (22 September 2016) |
|
| geometric albedo |
albedo |
0.090 |
|
0.003 |
Li et al. (2006) Icarus v182:pp143-160 |
V-band geometric albedo |
| B-V |
BV |
0.713 |
|
0.014 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=52; phase (min.=1.47, mean=11.85, max.=22.59) deg. |
| U-B |
UB |
0.426 |
|
0.026 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=52; phase (min.=1.47, mean=12.16, max.=22.59) deg. |
| Tholen spectral type |
spec_T |
G |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
| SMASSII spectral type |
spec_B |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
| 1 Ceres (A801 AA) Discovered 1801-Jan-01 by Piazzi, G. at Palermo |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ hide close-approach data ]
Close-Approach Data ...sorted by Date/Time (TDB)
|
| Date/Time (TDB) |
Time Uncertainty
(days_HH:MM) |
Body |
Nominal Distance (au) |
Minimum Distance (au) |
Maximum Distance (au) |
V-relative (km/s) |
V-infinity (km/s) |
JD (TDB) |
Time Uncertainty (minutes) |
Semi-major axis (km) |
Semi-minor axis (km) |
range-LOV angle (deg) |
N-sigma |
BP |
Orbit Ref. |
Reference |
Modified |
| 2056-Jun-26 01:01 |
< 00:01 |
Hygie |
0.0258343455489748 |
0.025833755101647 |
0.025834936013457 |
4.68387573708663 |
4.68387541778612 |
2472175.542342036 |
0.188387523581507 |
45.5725124262253 |
8.97976877520543 |
51.1927599439175 |
339105.697380773 |
T |
47 |
CATAB v2.0f-lin.ifort 2020-May-20 11:22:02 |
2020-May-20 11:22 |
|
Alternate Designations
| A801 AA = 1943 XB = A899 OF |
|
|
