207 Hedda

207 Hedda

Discovery
Discovered by	Johann Palisa
Discovery date	October 17, 1879
Designations
Alternative names	1932 CL1, 1934 XJ, 1953 BF
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	351.538 Gm (2.35 AU)
Perihelion	331.773 Gm (2.218 AU)
Semi-major axis	341.655 Gm (2.284 AU)
Eccentricity	0.029
Orbital period (sidereal)	1260.619 d (3.45 a)
Average orbital speed	19.71 km/s
Mean anomaly	275.242°
Inclination	3.804°
Longitude of ascending node	29.292°
Argument of perihelion	193.504°
Physical characteristics
Dimensions	59.0 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Synodic rotation period	unknown
Albedo	0.055
Temperature	unknown
Spectral type	C
Absolute magnitude (H)	9.92

207 Hedda is a sizeable Main belt asteroid. It is a C-type asteroid, meaning it is primitive in composition and dark in colour.

It was discovered by Johann Palisa on October 17, 1879 in Pola and was named after Hedwig, wife of astronomer Friedrich A. T. Winnecke.

References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Albedo Compilation