1215 Boyer

1215 Boyer

Discovery [1]
Discovered by	A. Schmitt
Discovery site	Algiers Observatory
Discovery date	19 January 1932
Designations
MPC designation	1215 Boyer
Named after	Louis Boyer[2]
Alternative names	1932 BA
Minor planet category	main-belt
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	84.25 yr (30773 days)
Aphelion	2.9204 AU (436.89 Gm)
Perihelion	2.2350 AU (334.35 Gm)
Semi-major axis	2.5777 AU (385.62 Gm)
Eccentricity	0.13294
Orbital period	4.14 yr (1511.7 d)
Mean anomaly	229.56°
Mean motion	0° 14^m 17.34^s / day
Inclination	15.916°
Longitude of ascending node	123.74°
Argument of perihelion	266.10°
Earth MOID	1.30379 AU (195.044 Gm)
Jupiter MOID	2.58434 AU (386.612 Gm)
Jupiter Tisserand parameter	3.360
Physical characteristics
Rotation period	10.36 h (0.432 d)
Spectral type	B–V = 0.900 U–B = 0.459 Tholen = S
Absolute magnitude (H)	11.0

1215 Boyer is a stony S-type asteroid from the asteroid belt. It was discovered by French astronomer Alfred Schmitt at Algiers Observatory, Algeria on 19 January 1932, and received the provisional designation 1932 BA.^[1] Eight days later, it was independently discovered by astronomer Karl Reinmuth at the Heidelberg Observatory.^[2]

Schmitt named the asteroid in honor of his colleague at Algiers Observatory, Louis Boyer (1901–1999), who worked extensively on minor planets and comets and discovered 40 minor planets at the same observatory.^[2]

References

1. "JPL Small-Body Database Browser: 1215 Boyer (1932 BA)" (2015-06-14 last obs.). Jet Propulsion Laboratory. Retrieved 30 April 2016.
2. Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1215) Boyer. Springer Berlin Heidelberg. p. 101. ISBN 978-3-540-29925-7. Retrieved October 2015.

External links

• Dictionary of Minor Planet Names, Google books
• 1215 Boyer at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters