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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 34 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .192825676842695 | 3.4092e-08 | |
| a | 2.435072332242018 | 7.3691e-09 | au |
| q | 1.965527861616531 | 8.3543e-08 | au |
| i | 1.98148921128268 | 4.2258e-06 | deg |
| node | 200.6148910879074 | 8.5271e-05 | deg |
| peri | 208.0528429914249 | 8.5893e-05 | deg |
| M | 99.22376051952475 | 8.9354e-06 | deg |
| tp | 2458817.957750048507
(2019-Nov-30.45775005) | 3.4453e-05 | TDB |
| period | 1387.925727280198
3.80 | 6.3003e-06
1.725e-08 | d
yr |
| n | .2593798738102953 | 1.1774e-09 | deg/d |
| Q | 2.904616802867505 | 8.79e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.59 |
|
n/a |
E2021B10 |
|
| rotation period |
rot_per |
4.49 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Molnar, L.; Pal, A.; Sarneczky, K.; Szabo, R.; et al. (2018) Ap. J. Supp. Ser. 234, A37.] |
|
| 7737 Sirrah | Discovered 1981 Nov. 5 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory. |
| Named in honor of Alan William Harris (b. 1952), British astronomer, now at the DLR Institute of Planetary Exploration, Berlin. Harris has made both ground-based and space-based (ISO) radiometric observations of minor planets, concentrating especially on near-earth objects, and he has developed improved fitting techniques to relate observed fluxes to diameters and albedos. The name chosen is "Harris" spelled backwards, to distinguish from another Harris of the exact same name. Name suggested and citation prepared by the other A. W. Harris. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 19990728/MPCPages.arc | Last Updated: 2010-06-11 |
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