699 Hela

699 Hela
	A three-dimensional model of 699 Hela based on its light curve.
Discovery
Discovered by	J. Helffrich
Discovery site	Heidelberg
Discovery date	5 June 1910
Designations
Alternative designations	1910 KD
Minor planet category	Mars crosser
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	113.38 yr (41411 d)
Aphelion	3.6831 AU (550.98 Gm)
Perihelion	1.5414 AU (230.59 Gm)
Semi-major axis	2.6123 AU (390.79 Gm)
Eccentricity	0.40995
Orbital period (sidereal)	4.22 yr (1542.1 d)
Mean anomaly	3.93957°
Mean motion	0° 14m 0.384s / day
Inclination	15.297°
Longitude of ascending node	242.548°
Argument of perihelion	91.479°
Earth MOID	0.62609 AU (93.662 Gm)
Jupiter MOID	2.10581 AU (315.025 Gm)
TJupiter	3.239
Physical characteristics
Dimensions	12 - 27 km
Synodic rotation period	3.3962 h (0.14151 d)
Absolute magnitude (H)	11.72

699 Hela is a Mars crossing asteroid. With an absolute magnitude of 11.7,^[1] the asteroid is about 12–27 km in diameter.^[2]

References

^ ^a ^b ^c ^d ^e "JPL Small-Body Database Browser: 699 Hela (1910 KD)". Jet Propulsion Laboratory. Retrieved 7 May 2016.
^ ^a ^b "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-06-24.

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