4946 Askalaphus

Askalaphus

Discovery
Discovered by	Shoemaker, C. S.
Discovery site	Palomar
Discovery date	21 January 1988
Designations
MPC designation	4946
Alternative names	1988 BW1
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	23825 days (65.23 yr)
Aphelion	5.5891 AU (836.12 Gm)
Perihelion	5.0500 AU (755.47 Gm)
Semi-major axis	5.3196 AU (795.80 Gm)
Eccentricity	0.050665
Orbital period	12.27 yr (4481.37 d)
Mean anomaly	316.92°
Mean motion	0° 4^m 49.199^s / day
Inclination	21.861°
Longitude of ascending node	59.038°
Argument of perihelion	204.439°
Earth MOID	4.04367 AU (604.924 Gm)
Jupiter MOID	0.310922 AU (46.5133 Gm)
Jupiter Tisserand parameter	2.853
Physical characteristics
Dimensions	57 km[2]
Rotation period	22.731 h (0.9471 d)
Absolute magnitude (H)	10.1,[2] 10.1[1]

4946 Askalaphus (1988 BW1) is a Jupiter Trojan discovered on January 21, 1988 by Shoemaker, C. S. at Palomar.

Photometric observations of this asteroid during 1992 were used to build a light curve showing a rotation period of 22.731 ± 0.018 hours with a brightness variation of 0.40 ± 0.01 magnitude.^[2]

References

1. "4946 Askalaphus (1988 BW1)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 13 April 2016.
2. Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; Hahn, Gerhard; Schober, Hans-Josef; Lahulla, Felix; Delbò, Marco; Lagerkvist, Claes-Ingvar (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal 141 (5): 170. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170.

External links

• JPL Small-Body Database Browser on 4946 Askalaphus
• 4946 Askalaphus at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters