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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2368689577022748 | 3.4848e-08 | |
| a | 3.110213475622109 | 1.227e-08 | au |
| q | 2.373500451419931 | 1.0843e-07 | au |
| i | 17.47878573306701 | 4.3838e-06 | deg |
| node | 1.932923935990652 | 1.1854e-05 | deg |
| peri | 306.8562042783514 | 1.4382e-05 | deg |
| M | 96.23773913541629 | 8.9777e-06 | deg |
| tp | 2458664.917182044015
(2019-Jun-30.41718204) | 4.9312e-05 | TDB |
| period | 2003.474065333678
5.49 | 1.1856e-05
3.246e-08 | d
yr |
| n | .179687876289051 | 1.0633e-09 | deg/d |
| Q | 3.846926499824287 | 1.5176e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
9.87 |
|
n/a |
E2021B10 |
IRAS observations used: 14 |
| diameter |
diameter |
74.274 |
km |
1.122 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
7.787 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Klinglesmith, D.A.; Dehart, A.; Hanowell, J.; Henderickx, S. (2015) Minor Planet Bull. 42, 101-104.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] |
| geometric albedo |
albedo |
0.032 |
|
0.007 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| B-V |
BV |
0.726 |
|
0.028 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=12.94 deg. |
| U-B |
UB |
0.283 |
|
0.050 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=1; phase=12.94 deg. |
| Tholen spectral type |
spec_T |
P |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
|
| 746 Marlu (A913 EJ) Discovered 1913-Mar-01 by Kaiser, F. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| A913 EJ = 1926 WA = 1975 XN |
|
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