636 Erika information

636 Erika
	Modelled shape of Erika from its lightcurve
Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	8 February 1907
Designations
MPC designation	(636) Erika
Alternative designations	1907 XP
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	109.17 yr (39874 d)
Aphelion	3.4121 AU (510.44 Gm)
Perihelion	2.4133 AU (361.02 Gm)
Semi-major axis	2.9127 AU (435.73 Gm)
Eccentricity	0.17145
Orbital period (sidereal)	4.97 yr (1815.7 d)
Mean anomaly	182.784°
Mean motion	0° 11m 53.772s / day
Inclination	7.9270°
Longitude of ascending node	34.644°
Argument of perihelion	297.818°
Physical characteristics
Mean radius	37.145±3.35 km
Synodic rotation period	14.603 h (0.6085 d)
Geometric albedo	0.0507±0.011
Absolute magnitude (H)	9.6

636 Erika is a minor planet orbiting the Sun.

^ "636 Erika (1907 XP)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 5 May 2016.

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Discovery
Modelled shape of Erika from its lightcurve
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	8 February 1907
Designations
MPC designation	(636) Erika
Alternative designations	1907 XP
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	109.17 yr (39874 d)
Aphelion	3.4121 AU (510.44 Gm)
Perihelion	2.4133 AU (361.02 Gm)
Semi-major axis	2.9127 AU (435.73 Gm)
Eccentricity	0.17145
Orbital period (sidereal)	4.97 yr (1815.7 d)
Mean anomaly	182.784°
Mean motion	0° 11^m 53.772^s / day
Inclination	7.9270°
Longitude of ascending node	34.644°
Argument of perihelion	297.818°
Physical characteristics
Mean radius	37.145±3.35 km
Synodic rotation period	14.603 h (0.6085 d)
Geometric albedo	0.0507±0.011
Absolute magnitude (H)	9.6