757 Portlandia
From Infogalactic: the planetary knowledge core
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | September 30, 1908 |
| Designations | |
| 1908 EJ | |
| Orbital characteristics | |
| Epoch August 18, 2005 (JDCT 2453600.5) | |
| Aphelion | 2.632 AU |
| Perihelion | 2.116 AU |
| 2.374 AU | |
| Eccentricity | 0.109 |
| 3.658 a | |
| 134.949° | |
| Inclination | 8.169° |
| 22.589° | |
| 44.323° | |
| Physical characteristics | |
| Dimensions | 32 km[1] |
| 6.58 h[1] | |
| Albedo | 0.14[1] |
|
Spectral type
|
M |
| 12.3 to 15.7 | |
| 10.2[1] | |
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757 Portlandia is a main-belt asteroid 32 km in diameter.[1] In November 2015 amateur astronomers where photographing it in images of comet 67P/Churyumov–Gerasimenko.[2] Portlandia will come to opposition in March 2016 at apparent magnitude 13.2.
References
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