S / 2000 (762) 1

(762) Pulcova I (S / 2000 (762) 1)
Provisional or systematic name	S / 2000 (762) 1
Central body	(762) Pulcova
Properties of the orbit
Major semi-axis	703 ± 14 km
Periapsis	682 km
Apoapsis	724 km
eccentricity	0.03 ± 0.01
Orbital time	4.438 ± 0.001 d
Physical Properties
Albedo	≈ 0.043 ± 0.009
Medium diameter	19 ± 7 km
surface	1134 km ²
Medium density	≈ 0.9 ± 0.1 g / cm ³
discovery
Explorer	William J. Merline Laird M. Close J. Chris Shelton Christophe Dumas François Menard Clark R. Chapman David C. Slater
Date of discovery	February 22, 2000

S / 2000 (762) 1 is a moon of the main outer belt asteroid (762) Pulcova . Its mean diameter is 19 kilometers.

Discovery and naming

S / 2000 (762) 1 was used on February 22, 2000 by a team of astronomers consisting of William J. Merline, Laird M. Close, J. Chris Shelton, Christophe Dumas, François Menard, Clark R. Chapman and David C. Slater adaptive optics discovered at the Canada-France-Hawaii Telescope (CFHT) on Mauna Kea in Hawaii . The discovery was later confirmed by the CFHT and the Keck II telescope . The discovery was announced on October 26, 2000; the moon was given the provisional designation S / 2000 (762) 1 . An official naming by the IAU is still pending.

S / 2000 (762) 1 was the third discovery of an asteroid moon after Dactyl (moon) (1993) and Petit-Prince (1998).

Track properties

S / 2000 (762) 1 orbits Pulcova in an orbit at a mean distance of 703 kilometers from its center (about 9.5 Pulcova radii). The orbital eccentricity is 0.03, the orbital inclination is currently still undetermined.

S / 2000 (762) 1 orbits Pulcova in 4 days, 10 hours and 30.7 minutes, which corresponds to around 462 orbits in one Pulcova year (around 5.6 earth years). The orbit of S / 2000 (762) 1 is believed to be stable because it is well within Pulcova's Hill radius of 29,000 km, but also well outside of the synchronous orbit.

Physical Properties

size

According to current data, S / 2003 (379) 1 has a diameter of 19 km (about 1/8 of the central body), based on Pulcova's estimated density of 0.9 g / cm ³ and the corresponding assumed equal reflectivity of 4%.

Assuming a mean diameter of 19 km, this results in a surface area of around 1,134 km ² , which is slightly larger than the area of the Swiss canton of Uri .

Provisions of the diameter for Pulcova

year	Dimensions km	source
2000	14.5	Merline et al. a.
2008	19.0 ± 7.0	Marchis et al. a.

The most precise / current determination is marked in bold .

internal structure

Since S / 2000 (762) 1 has a similar color to the mother body, it is assumed that the moon is made of the same material as Pulcova and therefore has the same spectral type (F or C).

Web links

Wm. Robert Johnston: (762) Pulcova (English)

762 Pulcova discovery photo of (762) Pulcova and S / 2000 (762) 1 (English)

Individual evidence

^ William J. Merline et al: Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging (June 2000) (PDF). Retrieved September 19, 2017 .
^ ^A ^b William J. Merline et al.: Astronomers image double asteroid an a new asteroid moon (October 2000) (PDF). Retrieved September 19, 2017 .
^ Franck Marchis et al .: Main Belt Binary Asteroidal Systems With Circular Mutual Orbits . April 2008, arxiv : 0804.1383 .

[merline2000-1] William J. Merline et al: Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging (June 2000) (PDF). Retrieved September 19, 2017 .

[merline2000-2-2] A ^b William J. Merline et al.: Astronomers image double asteroid an a new asteroid moon (October 2000) (PDF). Retrieved September 19, 2017 .

[marchis-3] Franck Marchis et al .: Main Belt Binary Asteroidal Systems With Circular Mutual Orbits . April 2008, arxiv : 0804.1383 .