705 Erminia

705 Erminia is a minor planet orbiting the Sun. Its name derives from the comic opera Erminie. An occultation on 8 December 2014 gave 3 chords, with one measurement suggesting a small moon 6–10 kilometers wide at a distance of 400 kilometers to the primary.^[3]

DiscoveredbyE. Ernst

DiscoverysiteHeidelberg Obs.

Discoverydate6 October 1910

MPCdesignation

(705) Erminia

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705 Erminia

Animation of 705 Erminia's orbit 2000–2020    Sun   Earth ·    Mars ·   Jupiter ·    705 Erminia
Discovery
Discovered by	E. Ernst
Discovery site	Heidelberg Obs.
Discovery date	6 October 1910
Designations
MPC designation	(705) Erminia
Pronunciation	/ərˈmɪniə/
Alternative designations	1910 KV
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	105.53 yr (38544 d)
Aphelion	3.0635189 AU (458.29590 Gm)
Perihelion	2.7809463 AU (416.02365 Gm)
Semi-major axis	2.92223259 AU (437.159773 Gm)
Eccentricity	0.04834875
Orbital period (sidereal)	5.00 yr (1824.6 d)
Mean anomaly	348.73426°
Mean motion	0° 11m 50.288s / day
Inclination	25.045517°
Longitude of ascending node	2.8949214°
Argument of perihelion	101.35517°
Physical characteristics
Dimensions	128 km × 141 km (occultation)
Mean diameter	132.261±1.178 km[1][2] 70–130 km (assumed albedo=0.05–0.3) 134.22 ±2.3 (IRAS) 133.9–134.5 (albedo estimate)
Mass	(4.12 ± 1.775/0.942)×1018 kg[2]
Mean density	3.401 ± 1.465/0.778 g/cm3[2]
Synodic rotation period	53.96 h (2.248 d)
Geometric albedo	0.031±0.005[1]
Spectral type	X (tholen) C (SMASSII) B-V = 0.667–0.725 U-B = 0.249–0.327
Absolute magnitude (H)	8.51[1]

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