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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .190084418995662 | 3.3985e-08 | |
| a | 2.208233274565878 | 5.17e-09 | au |
| q | 1.788482535563135 | 7.6456e-08 | au |
| i | 5.449627368883566 | 3.6045e-06 | deg |
| node | 163.0997216306074 | 3.3345e-05 | deg |
| peri | 193.9213318015352 | 3.4357e-05 | deg |
| M | 28.26913751391154 | 9.7474e-06 | deg |
| tp | 2458906.381302337874
(2020-Feb-26.88130234) | 3.2296e-05 | TDB |
| period | 1198.57675677906
3.28 | 4.2092e-06
1.152e-08 | d
yr |
| n | .3003562333107723 | 1.0548e-09 | deg/d |
| Q | 2.627984013568621 | 6.1527e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.8 |
|
n/a |
MPO492760 |
|
| diameter |
diameter |
7.249 |
km |
0.351 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
3.2324 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Pilcher, F. (2017) Minor Planet Bull. 44, 9.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] |
| geometric albedo |
albedo |
0.239 |
|
0.130 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.904 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=17.84, mean=23.32, max.=28.79) deg. |
| U-B |
UB |
0.534 |
|
0.071 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=17.84, mean=23.32, max.=28.79) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
| 864 Aase (A921 SB) Discovered 1921-Sep-30 by Reinmuth, K. at Heidelberg |
| In 1958 A. Patry, Nice, found that planet 864 Aase, discovered 1917 Feb. 13 by M. Wolf, Heidelberg, is identical with 1078 Mentha, discovered 1926 Dec. 7 by K. Reinmuth, Heidelberg. This object retains the latter designation 1078 Mentha. In 1974 the designation 864 Aase was assigned to planet 1921 KE, discovered 1921 Sept. 30 by K. Reinmuth and newly catalogued. |
| Note: "planet" implies "minor planet" |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
Alternate Designations
| A921 SB = 1944 RC = 1967 RA1 = 1970 PC |
|
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