(2131) Mayall
compiled by Wm. Robert Johnston
last updated 25 January 2010
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
1.8871936 AU
| |
orbital period P: |
2.59 y (=946.9414 d)
| |
eccentricity e: |
0.1109741
| |
perihelion distance q: |
1.6777640 AU
| |
aphelion distance Q: |
2.0966232 AU
| |
inclination i: |
33.99341°
| |
argument of perihelion omega: |
38.34801°
| |
ascending node OMEGA: |
306.09167°
| |
mean anomaly M: |
93.78864°
| |
perihelion passage TP: |
2009-05-02.2990
| |
Epoch: |
4 JAN 2010
| |
data arc: |
1975-2001 (139 obs.)
| orbital data, secondary:
|
semimajor axis a: |
(16 km?)
| |
semimajor axis/primary radius a/Rp: |
(4?)
| |
orbital period P: |
23.48 ± 0.01 h [C2105]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
7.77 ± 0.50 km [IR] (combined)
(7.5 km)
| |
absolute magnitude H: |
12.72 [JPL]
| |
rotation period: |
2.5678 ± 0.0001 [C2105]
| |
amplitude delta M: |
0.09 ± 0.02 [W07a]
| |
color index B-V: |
0.871±0.014 [JPL]
| |
color index U-B: |
0.450±0.034 [JPL]
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.2391 ± 0.0310 [IR]
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
(2.1 km)
| |
diameter ratio Ds/Dp: |
0.28 ± 0.02 [C2105]
| |
component magnitude difference: |
(0.22)
| |
rotation period: |
?
|
|
--(2131) Mayall--discovery and notes:
Discovered 3 September 1975 by A. R. Klemola at Lick Observatory. Additional designation 1975 RA.
Secondary identified based on lightcurve observations on 30 Nov-16 Dec 2009 by B. Warner, P. Pravec, P. Kusnirak, K. Hornoch, J. Vilagi, L. Kornos, S. Gajdos, P. Veres, A. Galad, W. Cooney, J. Gross, D. Terrell, Yu. Krugly, and V. Chiorny; announced 31 Dec 2009.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
© 2010 by Wm. Robert Johnston.
Last modified 25 January 2010.
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