Astronomy:618 Elfriede
From HandWiki
| Discovery | |
|---|---|
| Discovered by | K. Lohnert |
| Discovery site | Heidelberg |
| Discovery date | 17 October 1906 |
| Designations | |
| (618) Elfriede | |
| Pronunciation | German: [ɛlˈfʁiːdə][1] |
| 1906 VZ | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.50 yr (39996 d) |
| |{{{apsis}}}|helion}} | 3.4223 astronomical unit|AU (511.97 Gm) |
| |{{{apsis}}}|helion}} | 2.9551 AU (442.08 Gm) |
| 3.1887 AU (477.02 Gm) | |
| Eccentricity | 0.073271 |
| Orbital period | 5.69 yr (2079.8 d) |
| Mean anomaly | 142.019° |
| Mean motion | 0° 10m 23.124s / day |
| Inclination | 17.037° |
| Longitude of ascending node | 111.070° |
| 228.138° | |
| Physical characteristics | |
| Mean radius | 60.145±2.5 km |
| Rotation period | 14.795 h (0.6165 d) |
| Geometric albedo | 0.0606±0.005 |
| Absolute magnitude (H) | 8.3 |
618 Elfriede is a minor planet orbiting the Sun. On July 24, 2013, it occulted the magnitude 12.8 star 2UCAC 23949304, over parts of Mexico and southwestern United States .[3]
Photometric observations of this asteroid collected during 2008 show a rotation period of 14.85 ± 0.01 hours with a brightness variation of 0.12 ± 0.02 magnitude.[4]
References
- ↑ (German Names)
- ↑ "618 Elfriede (1906 VZ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=618;cad=1.
- ↑ Asteroid Occultation - (618) Elfriede
- ↑ Carbo, Landy et al. (July 2009), "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory and Oakley Observatory: 2008 September and October", The Minor Planet Bulletin 36 (3): 91–94, Bibcode: 2009MPBu...36...91C.
External links
- Lightcurve plot of 618 Elfriede, Palmer Divide Observatory, B. D. Warner (2006)
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 618 Elfriede at AstDyS-2, Asteroids—Dynamic Site
- 618 Elfriede at the JPL Small-Body Database
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