7440 Závist
| Discovery [1] | |
|---|---|
| Discovered by | M. Tichý |
| Discovery site | Kleť Observatory |
| Discovery date | 1 March 1995 |
| Designations | |
| MPC designation | 7440 Závist |
Named after |
Oppidum Závist (Celtic oppidum)[2] |
| 1995 EA · 1980 PL4 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 35.62 yr (13,010 days) |
| Aphelion | 3.0150 AU |
| Perihelion | 2.1619 AU |
| 2.5884 AU | |
| Eccentricity | 0.1647 |
| 4.16 yr (1,521 days) | |
| 43.291° | |
| 0° 14m 11.76s / day | |
| Inclination | 10.968° |
| 147.89° | |
| 319.91° | |
| Physical characteristics | |
| Dimensions |
5.05±0.61 km[4] 5.07 km (calculated)[3] |
| 7.4365±0.0023 h[5] | |
|
0.363±0.094[4] 0.20 (assumed)[3] | |
| S [3] | |
|
13.4[1] 13.84[3] 13.2[4] 13.390±0.005 (R)[5] 13.73±0.36[6] | |
|
| |
7440 Závist, provisional designation 1995 EA, is a stony asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 1 March 1995, by Czech astronomer Miloš Tichý at Kleť Observatory in South Bohemia.[7]
The S-type asteroid orbits the Sun at a distance of 2.2–3.0 AU once every 4 years and 2 months (1,521 days). Its orbit has an eccentricity of 0.16 and an inclination of 11° with respect to the plane of the ecliptic.[1] Due to a precovery at the U.S. Palomar Observatory, the asteroid's observation arc already begins in 1980.[7]
In September 2010, a rotational light-curve was obtained based on a photometric observations at the U.S. Palomar Transient Factory in California. It showed a rotation period of 7.4365±0.0023 hours with a brightness amplitude of 0.55 in magnitude (U=2).[5]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 5.05 kilometers in diameter and its surface has an exceptionally high albedo of 0.363±0.094.[4] The Collaborative Asteroid Lightcurve Link (CALL) assumes a standard albedo for stony asteroids of 0.20 and calculates a nearly identical diameter of 5.07 kilometers, based on an absolute magnitude of 13.84.[3]
The minor planet was named for the Oppidum Závist, a Celtic settlement south of Prague in Bohemia. The ancient ruins are located on a hill above Vltava river (also see the minor planets 2367 Praha and 2123 Vltava). The site consists of two parts named "Hradiště" and "Šance". The settlement existed between the 6th century BC and 1st century AD, and represents part of the most outstanding remnants of known Celtic history in the Czech Republic, especially its ramparts and moats, as well as its acropolis.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 7440 Zavist (1995 EA)" (2016-03-18 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (7440) Závist. Springer Berlin Heidelberg. p. 597. ISBN 978-3-540-00238-3. Retrieved April 2016.
- 1 2 3 4 5 6 "LCDB Data for (7440) Zavist". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
- 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved April 2016.
- 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved April 2016.
- 1 2 "7440 Zavist (1995 EA)". Minor Planet Center. Retrieved April 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 7440 Závist at the JPL Small-Body Database
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