[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .121904591652365 | 2.9017e-08 | |
| a | 3.05619917056239 | 1.3171e-08 | au |
| q | 2.683634458666685 | 8.6957e-08 | au |
| i | 11.05566247527096 | 3.8983e-06 | deg |
| node | 188.4142303834887 | 1.5964e-05 | deg |
| peri | 107.0094819210117 | 2.2517e-05 | deg |
| M | 86.77168474211888 | 1.568e-05 | deg |
| tp | 2458530.122612056828
(2019-Feb-15.62261206) | 8.4583e-05 | TDB |
| period | 1951.510566641638
5.34 | 1.2615e-05
3.454e-08 | d
yr |
| n | .184472483087563 | 1.1925e-09 | deg/d |
| Q | 3.428763882458095 | 1.4777e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2457253.5 (2015-Aug-19.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .124551482034263 | 2.8836e-08 | |
| q | 2.673891059388051 | 8.6672e-08 | au |
| tp | 2456582.504345335634
(2013-Oct-17.00434534) | 8.2691e-05 | TDB |
| node | 188.4757797752138 | 1.5937e-05 | deg |
| peri | 107.6099215379328 | 2.2316e-05 | deg |
| i | 11.0672412952297 | 3.9031e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
8.314896859793361E-16 |
-2.477942599329378E-15 |
2.976148180532997E-13 |
9.895558497833684E-16 |
3.894973112611342E-14 |
-2.446628359497661E-16 |
| q |
-2.477942599329378E-15 |
7.512121812751819E-15 |
-9.684645397457965E-13 |
-3.015029470191918E-15 |
-1.232769742940314E-13 |
1.007145192390081E-15 |
| tp |
2.976148180532997E-13 |
-9.684645397457965E-13 |
6.837770522781345E-9 |
-5.730797547605644E-12 |
1.299737348497117E-9 |
8.578159053406853E-13 |
| node |
9.895558497833684E-16 |
-3.015029470191918E-15 |
-5.730797547605644E-12 |
2.53973208877057E-10 |
-2.499993435962454E-10 |
2.758162372147327E-12 |
| peri |
3.894973112611342E-14 |
-1.232769742940314E-13 |
1.299737348497117E-9 |
-2.499993435962454E-10 |
4.980245562397358E-10 |
-2.520003163502088E-12 |
| i |
-2.446628359497661E-16 |
1.007145192390081E-15 |
8.578159053406853E-13 |
2.758162372147327E-12 |
-2.520003163502088E-12 |
1.523434974003283E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.1 |
|
n/a |
MPO502200 |
|
| diameter |
diameter |
13.711 |
km |
0.369 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.215 |
|
0.065 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 4897 Tomhamilton | Discovered 1987 Aug. 22 by E. F. Helin at Palomar. |
| Thomas William Hamilton (b. 1939) determined radar and fuel requirements for the Apollo Project. Later he wrote shows (in a dozen languages and also for the deaf) for programmable planetaria, taught astronomy for 32 years and trained students to enter the planetarium field. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20091004/MPCPages.arc | Last Updated: 2009-10-06 |
|
[ show close-approach data ]
Alternate Designations
| 1987 QD6 = 1971 QV1 = 1971 SB1 = 1990 BN1 |
|
|
