(2557) Putnam
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Asteroid (2557) Putnam |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2.3493 ± 0.0001 AU |
| eccentricity | 0.1563 ± 0.0003 |
| Perihelion - aphelion | 1.9821 ± 0.0008 AU - 2.7166 ± 0.0001 AU |
| Inclination of the orbit plane | 6.0686 ± 0.035 ° |
| Length of the ascending node | 188.2463 ± 0.3193 ° |
| Argument of the periapsis | 189.6555 ± 0.3377 ° |
| Time of passage of the perihelion | 23 October 2017 |
| Sidereal period | 3.6 a ± 0.0587 d |
| Physical Properties | |
| Medium diameter | 7.465 ± 0.058 km |
| Albedo | 0.348 ± 0.059 |
| Rotation period | 35.68 h |
| Absolute brightness | 12.6 mag |
| history | |
| Explorer |
 Brian A. Skiff , Norman G. Thomas
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| Date of discovery | September 26, 1981 |
| Another name | 1981 SL 1 ; 1956 VF; 1963 TE; 1970 PN; 1970 QN 1 ; 1976 GX 4 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(2557) Putnam ( 1981 SL 1 ; 1956 VF ; 1963 TE ; 1970 PN ; 1970 QN 1 ; 1976 GX 4 ) is an approximately seven kilometers large asteroid of the main inner belt that was discovered on September 26, 1981 by the American astronomer Brian A. Skiff and Norman G. Thomas at Lowell Observatory , Anderson Mesa Station ( Anderson Mesa ) near Flagstaff , Arizona ( IAU code 688).
designation
(2557) Putnam was named after the Putnam family who supported the Lowell Observatory; in particular Roger Lowell Putnam (1893-1972) and since son Michael Putnam , the trustees of the Lowell Observatory.
See also
Web links
- (2557) Putnam in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2557) Putnam in the Small-Body Database of the Jet Propulsion Laboratory .
Individual evidence
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Fifth Revised and Enlarged Edition. Ed .: Lutz D. Schmadel. 5th edition. Springer Verlag , Berlin , Heidelberg 2003, ISBN 978-3-540-29925-7 , pp. 186 (English, 992 pp., Link.springer.com [ONLINE; accessed on August 21, 2019] Original title: Dictionary of Minor Planet Names . First edition: Springer Verlag, Berlin, Heidelberg 1992): “1981 SL 1 . Discovered 1981 Sept. 26 by BA Skiff and NG Thomas at Anderson Mesa. "
| predecessor | asteroid | successor |
|---|---|---|
| (2556) Louise | numbering | (2558) Viv |