[ hide orbit diagram ]
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .06615200740980436 | 3.7916e-08 | |
| a | 2.180176964828048 | 5.1863e-09 | au |
| q | 2.035953882096059 | 8.1829e-08 | au |
| i | 5.075861614193558 | 3.7041e-06 | deg |
| node | 187.4489227367098 | 3.9909e-05 | deg |
| peri | 339.7739059694989 | 4.687e-05 | deg |
| M | 154.8101810806918 | 2.495e-05 | deg |
| tp | 2458694.869730816377
(2019-Jul-30.36973082) | 8.1405e-05 | TDB |
| period | 1175.807014987123
3.22 | 4.1956e-06
1.149e-08 | d
yr |
| n | .3061726928070273 | 1.0925e-09 | deg/d |
| Q | 2.324400047560038 | 5.5294e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2456417.5 (2013-May-05.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .0657077127532075 | 3.7923e-08 | |
| q | 2.036369169909328 | 8.1792e-08 | au |
| tp | 2456342.649315404718
(2013-Feb-19.14931540) | 8.1859e-05 | TDB |
| node | 187.5314714088069 | 3.9941e-05 | deg |
| peri | 339.3379772845473 | 4.6988e-05 | deg |
| i | 5.073542421020414 | 3.7026e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
1.438150928217276E-15 |
-3.096754355179325E-15 |
-9.679366190912383E-13 |
-2.870740954604555E-15 |
-2.846897496487399E-13 |
1.806733129265596E-16 |
| q |
-3.096754355179325E-15 |
6.689974213377737E-15 |
2.08992280876964E-12 |
6.020813271949468E-15 |
6.137895108340165E-13 |
-3.375106740924434E-16 |
| tp |
-9.679366190912383E-13 |
2.08992280876964E-12 |
6.700951767888499E-9 |
-2.518970600760413E-12 |
2.037288322265537E-9 |
1.020560568541086E-13 |
| node |
-2.870740954604555E-15 |
6.020813271949468E-15 |
-2.518970600760413E-12 |
1.595307934478687E-9 |
-1.589493527678078E-9 |
-5.241726385137112E-11 |
| peri |
-2.846897496487399E-13 |
6.137895108340165E-13 |
2.037288322265537E-9 |
-1.589493527678078E-9 |
2.207917396495897E-9 |
5.227044263281846E-11 |
| i |
1.806733129265596E-16 |
-3.375106740924434E-16 |
1.020560568541086E-13 |
-5.241726385137112E-11 |
5.227044263281846E-11 |
1.370939177167318E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.17 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
8.963 |
km |
0.113 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
34.34 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
| geometric albedo |
albedo |
0.318 |
|
0.052 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 1651 Behrens | Discovered 1936 Apr. 23 by M. Laugier at Nice. |
| Named in memory of Johann Gerhard Behrens (1889-1978), pastor at Detern, well known for his orbit computations on comets and minor planets. Name proposed by O. Kippes, who found some of the identifications involving this planet. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: MPC 5523 | Last Updated: 2006-03-21 |
|
[ show close-approach data ]
Alternate Designations
| 1936 HD = 1939 EJ = 1940 QD = 1944 YA = 1947 WA = 1950 TB4 = 1952 FF = 1952 HB = 1952 KG = 1958 BC = 1961 AB = 1963 UQ |
|
|
