| C/1995 O1 (Hale-Bopp) |
| Classification: Comet SPK-ID: 1000132 |
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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.
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Orbital Elements at Epoch 2454724.5 (2008-Sep-15.0) TDB
Reference: JPL J971B/1 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .9949607008417696 | 1.1526e-05 | |
| a | 182.0519703474959 | 0.42291 | au |
| q | .9174143409263262 | 3.9278e-05 | au |
| i | 89.21708989130315 | 0.00024682 | deg |
| node | 282.9487539423989 | 0.00069828 | deg |
| peri | 130.662020526416 | 0.0022003 | deg |
| M | 1.67964178642615 | 0.0059279 | deg |
| tp | 2450538.437848275592
(1997-Mar-30.93784828) | 0.19071 | TDB |
| period | 897204.6223184657
2456.41 | 3126.4
8.56 | d
yr |
| n | .0004012462609362447 | 1.3982e-06 | deg/d |
| Q | 363.1865263540654 | 0.8437 | au |
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| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| comet total magnitude |
M1 |
4.0 |
|
0.8 |
J971B/1 |
from 32 observations, assumed slope, autocmod 2.6k |
| comet total magnitude slope |
K1 |
8. |
|
n/a |
J971B/1 |
autocmod 2.6k |
| diameter |
diameter |
60 |
km |
20 |
Fernandez (2002) Earth, Moon and Planets 89:3-25 |
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| geometric albedo |
albedo |
0.04 |
|
0.03 |
Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002) |
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[ show close-approach data ]
Alternate Designations
Perihelion
Year (est.) | New-Style
Desig | Roman
Numeral | Year/
Letter | | 1997.2 | C/1995 O1 | | |
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