(4786) Tatianina

compiled by Wm. Robert Johnston
last updated 28 November 2008

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: 2.3585559 AU
orbital period P: 3.62 y (=1,323.0 d)
eccentricity e: 0.1927433
perihelion distance q: 1.9039601 AU
aphelion distance Q: 2.8131517 AU
inclination i: 7.25167°
argument of perihelion omega: 117.58059°
ascending node OMEGA: 116.02045°
mean anomaly M: 327.15227°
perihelion passage TP: 2006-07-04.717592
Epoch: 06 MAR 2006
data arc: 1970-2006 (460 obs.)

orbital data, secondary:
semimajor axis a: (20 km?)
semimajor axis/primary radius a/Rp: (4?)
orbital period P: 21.67 ± 0.01 h [C472]
eccentricity e: ?

other data, primary:
diameter: (9.5 km?)
absolute magnitude H: 13.2 [JPL]
rotation period: 2.9227 ± 0.0001 h [C472]
amplitude delta M: 0.20 [C472]
color index B-V: ?
color index V-R: ?
color index R-I: ?
slope parameter G: (0.15) assumed
geometric albedo: (0.10) assumed
mass: ?
density: ?
type: ?

other data, secondary:
diameter: (1.8 km?)
diameter ratio Ds/Dp: 0.19 ± 0.03 [C472]
component magnitude difference: (3.6)
rotation period: ?

--(4786) Tatianina--discovery and notes:

Primary discovered 13 August 1985 by N. S. Chernykh from Nauchnyj, but subsequently linked to prediscovery observations to 1948. Additional designations 1985 PE2, 1948 GA, 1970 KF, 1984 EV1, and 1984 FM1.

Secondary discovered by D. Pray, P. Pravec, P. Kusnirak, S. Nudds, A. Galad, S. Gajdos, J. Vilagi, and R. Koff from analysis of lightcurve observations made 20 March-8 April 2006; reported 11 April 2006.

See more information and links at Asteroid/Comet Connection Catchall Catalog page

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2006, 2008 by Wm. Robert Johnston.
Last modified 28 November 2008.
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