From Surf Wiki (app.surf) — the open knowledge base

4786 Tatianina

Asteroid

Summary

Asteroid

Field	Value
minorplanet	yes
name	4786 Tatiana
background	#D6D6D6
discovery_ref
discoverer	N. Chernykh
discovery_site	Crimean Astrophysical Obs.
discovered	13 August 1985
mpc_name	(4786) Tatianina
alt_names	1948 GA
1970 KF

named_after	Tatiana Somova
(Friend of discoverer)
mp_category	main-belt(inner)
background
orbit_ref
epoch	23 March 2018 (JD 2458200.5)
uncertainty	0
observation_arc	47.10 yr (17,202 d)
aphelion	2.8145 AU
perihelion	1.9011 AU
semimajor	2.3578 AU
eccentricity	0.1937
period	3.62 yr (1,322 d)
mean_anomaly	83.900°
mean_motion	/ day
inclination	7.2560°
asc_node	115.77°
arg_peri	118.27°
satellites
mean_diameter
3.48 km (taken)
rotation

albedo

spectral_type	SMASS XcE
abs_magnitude	13.3
(R)
13.76

1970 KF

(Friend of discoverer) background

3.48 km (taken)

(R)

13.76

4786 Tatianina, provisional designation , is a bright background asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 3.4 km in diameter. It was discovered on 13 August 1985, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named after Tatiana Somova, a friend of the discoverer. The E-/Xc-subtype has a short rotation period of 2.9 hours. Its sub-kilometer minor-planet moon was discovered on 20 March 2006 and announced the following month.

Orbit and classification

Tatianina is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.8 AU once every 3 years and 7 months (1,322 days; semi-major axis of 2.36 AU). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic.

The asteroid was first observed as at the Algiers Observatory in April 1948. The body's observation arc begins at Nauchnij in May 1970 as , more than 15 years prior to its official discovery observation.

Physical characteristics

In the SMASS classification, Tatianina is a Xc-subtype that transitions from the X-type to the carbonaceous C-type asteroids. It has also been characterized as a bright E-type by the Wide-field Infrared Survey Explorer (WISE).

Rotation period

Several rotational lightcurves of Tatianina have been obtained from photometric observations since 2003 (). Analysis of the best-rated lightcurve from March 2003, during which a satellite was also discovered (see below), gave a rotation period of 2.9227 hours with a brightness amplitude of 0.19 and 0.20 magnitude ().

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Tatianina measures between 3.282 and 3.475 kilometers in diameter and its surface has an exceptionally high albedo of 0.4763 to 0.514. The Collaborative Asteroid Lightcurve Link adopts the revised WISE-data by Petr Pravec, that is an albedo of 0.4763 and rounded diameter of 3.48 kilometers based on an absolute magnitude of 13.718.

Satellite

During the photometric observations by Donald Pray, Petr Pravec and collaborators in March 2006, it was revealed that Tatianina is a synchronous binary asteroid with a minor-planet moon orbiting it every 21.67 hours at an estimated average distance of . The discovery was announced on 11 April 2006. The mutual occultation events suggest the presence of a satellite with an estimated diameter of meters or 19% the size of its primary.

Numbering and naming

This minor planet was numbered on 28 April 1991. It was named by the discoverer after Tatiana Aleksandrovna Somova, a nursery-school teacher in Saint Petersburg, Russia. The official naming citation was published by the Minor Planet Center on 5 March 1996 (M.P.C. 26762).

Notes

References

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

background-asteroids discoveries-by-nikolai-chernykh named-minor-planets binary-asteroids xc-type-asteroids-(smass) astronomical-objects-discovered-in-1985

Want to explore this topic further?

Ask Mako anything about 4786 Tatianina — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report