619 Triberga

619 Triberga

Discovery [1]
Discovered by	August Kopff
Discovery site	Heidelberg-Königstuhl State Observatory
Discovery date	22 October 1906
Designations
MPC designation	619
Named after	Triberg im Schwarzwald
Alternative names	1906 WC
Minor planet category	Main belt [2]
Orbital characteristics [2][3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	109.47 yr (39985 d)
Aphelion	2.7084 AU (405.17 Gm)
Perihelion	2.3342 AU (349.19 Gm)
Semi-major axis	2.5213 AU (377.18 Gm)
Eccentricity	0.074209
Orbital period	4.00 yr (1462.3 d)
Mean anomaly	188.954°
Mean motion	0° 14^m 46.284^s / day
Inclination	13.799°
Longitude of ascending node	187.484°
Argument of perihelion	178.250°
Earth MOID	1.33153 AU (199.194 Gm)
Jupiter MOID	2.61998 AU (391.943 Gm)
Jupiter Tisserand parameter	3.412
Physical characteristics
Rotation period	29.37 ± 0.06 hours [4] 29.412 ± 0.003 h [5] 29.412 h (1.2255 d) [2]
Spectral type	S [6]
Absolute magnitude (H)	9.95 [7]

619 Triberga is a main belt asteroid discovered on October 22, 1906 by August Kopff at Heidelberg-Königstuhl State Observatory.^[1] Since it has an orbit that repeats itself almost exactly every four years in respect to the position of the Sun and Earth it has been suggested as a way to calculate the mass of the moon.^[8] Triberga was named for the German town of Triberg.^[9]

Since it has an absolute magnitude of 9.9, it is roughly 43 km in diameter. It has an opposition apparent magnitude of 13.5.

References

1. "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. Archived from the original on 2 February 2009. Retrieved December 21, 2008.
2. "619 Triberga (1906 WC)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
3. "(619) Triberga". AstDyS. Italy: University of Pisa. Retrieved December 21, 2008.
4. Oliver; Shipley, Heath; Ditteon, Richard; et al. (2008). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2008 March". The Minor Planet Bulletin 35 (4): 149–150. Bibcode:2008MPBu...35..149O.
5. Pray (2006). "Lightcurve analysis of asteroids 326, 329, 426, 619, 1829, 1967, 2453, 10518 and 42267". The Minor Planet Bulletin 33 (1): 4–5. Bibcode:2006MPBu...33....4P.
6. Neese (2005). "Asteroid Taxonomy". EAR-A-5-DDR-TAXONOMY-V5.0. Planetary Data System. Archived from the original on 21 January 2009. Retrieved December 26, 2008.
7. Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0. Planetary Data System. Archived from the original on 1 December 2008. Retrieved December 26, 2008.
8. Brouwer, Dirk & Ashbrook, Joseph (1951). "The minor planet 619 Triberga and the mass of the moon". The Astronomical Journal 56 (3): 57–58. Bibcode:1951AJ.....56...57B. doi:10.1086/106513.
9. Schmadel, Lutz (2003). Dictionary of minor planet names (fifth ed.). Germany: Springer. p. 62. ISBN 3-540-00238-3. Retrieved 2008-12-26.

External links

• 619 Triberga at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters