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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 120 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1233002379803939 | 1.8407e-08 | |
| a | 2.38618944507183 | 3.0678e-09 | au |
| q | 2.091971718628169 | 4.4235e-08 | au |
| i | 5.576494024576454 | 2.0069e-06 | deg |
| node | 68.90945957769159 | 2.4169e-05 | deg |
| peri | 6.337324024962436 | 2.6006e-05 | deg |
| M | 23.91220474728801 | 1.0355e-05 | deg |
| tp | 2458911.072121665476
(2020-Mar-02.57212167) | 3.8666e-05 | TDB |
| period | 1346.343281209982
3.69 | 2.5964e-06
7.109e-09 | d
yr |
| n | .267390943323505 | 5.1565e-10 | deg/d |
| Q | 2.68040717151549 | 3.446e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2451661.5 (2000-Apr-27.0) TDB
Reference: JPL 120 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1217661342348172 | 1.8319e-08 | |
| q | 2.095808934319753 | 4.3906e-08 | au |
| tp | 2452176.416338718842
(2001-Sep-23.91633872) | 3.6987e-05 | TDB |
| node | 69.00340366291165 | 2.4165e-05 | deg |
| peri | 5.858278872854638 | 2.6065e-05 | deg |
| i | 5.578604551892282 | 2.0069e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
3.355897863584065E-16 |
-8.027925325227374E-16 |
1.379345874756324E-14 |
1.533952028039989E-15 |
-9.215545742331455E-16 |
1.60901580135478E-16 |
| q |
-8.027925325227374E-16 |
1.927699971338012E-15 |
-3.269737867305152E-14 |
-3.623869303809937E-15 |
1.383310080553865E-15 |
-3.593934089829548E-16 |
| tp |
1.379345874756324E-14 |
-3.269737867305152E-14 |
1.368008525507995E-9 |
-7.315133779506822E-12 |
3.676296667703555E-10 |
3.377506257187716E-13 |
| node |
1.533952028039989E-15 |
-3.623869303809937E-15 |
-7.315133779506822E-12 |
5.839241631375288E-10 |
-5.828768557525741E-10 |
-4.594433951116039E-12 |
| peri |
-9.215545742331455E-16 |
1.383310080553865E-15 |
3.676296667703555E-10 |
-5.828768557525741E-10 |
6.793885865304677E-10 |
4.656195879245098E-12 |
| i |
1.60901580135478E-16 |
-3.593934089829548E-16 |
3.377506257187716E-13 |
-4.594433951116039E-12 |
4.656195879245098E-12 |
4.027796555426974E-12 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
6.3 |
|
n/a |
MPO492748 |
|
| magnitude slope |
G |
0.17 |
|
n/a |
PDS3 (MPC 17257) |
Fit |
| diameter |
diameter |
190 |
km |
n/a |
Dunham Occult. list: Kristensen 1984b |
Yeomans E-mail 2001-Apr-04 |
| rotation period |
rot_per |
5.079 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 200-220.]
[Groeneveld, I.; Kuiper, G.P. (1954) Astrophys. J. 120, 529-546.]
[Yang, X.-y.; Zhang, Y.-y.; Li, X.-q. (1965) Acta Astron. Sin. 13, 66-74.]
[Schober, H.J.; Surdej, J. (1979) Astron. Astrophys. Suppl. Ser. 38, 269-274.]
[Zappala, V.; van Houten-Groeneveld, I. (1979) Icarus 40, 289-296.]
[Zeigler, K.W.; Florence, W.B. (1985) Icarus 62, 512-517.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[Richmond, E.H.; Neely, A.W. (1994) Minor Planet Bull. 21, 23-24.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Durech, J. (2011) Database of Asteroid Models from Inversion Techniques (DAMIT). http://astro.troja.mff.cuni.cz/projects/asteroids3D/web.php]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.] |
| geometric albedo |
albedo |
0.118 |
|
n/a |
EAR-A-5-DDR-ALBEDOS-V1.0:TRIAD |
TRIAD quality code 3 |
| B-V |
BV |
0.858 |
|
0.020 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=23; phase (min.=2.98, mean=9.80, max.=26.91) deg. |
| U-B |
UB |
0.496 |
|
0.030 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=20; phase (min.=2.98, mean=10.36, max.=26.91) deg. |
| Tholen spectral type |
spec_T |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
|
| 9 Metis (A848 HA) Discovered 1848-Apr-25 by Graham, A. at Markree |
| Apr. 26 is date of first measurement. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
|
