587 Hypsipyle

587 Hypsipyle, provisional designation 1906 TF, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 22 February 1906, by Germany astronomer Max Wolf at Heidelberg Observatory in southwest Germany.^[15]

587 Hypsipyle

Discovery [1]
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	22 February 1906
Designations
MPC designation	(587) Hypsipyle
Pronunciation	/hɪpˈsɪpɪliː/[2]
Named after	Hypsipyle (Greek mythology)[3]
Alternative designations	1906 TF · 1931 CH 1956 EN1
Minor planet category	main-belt · (inner) [4] Phocaea [5]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	111.10 yr (40,578 days)
Aphelion	2.7254 AU
Perihelion	1.9442 AU
Semi-major axis	2.3348 AU
Eccentricity	0.1673
Orbital period (sidereal)	3.57 yr (1,303 days)
Mean anomaly	85.891°
Mean motion	0° 16m 34.68s / day
Inclination	24.993°
Longitude of ascending node	324.58°
Argument of perihelion	188.53°
Physical characteristics
Dimensions	11.022±0.086 km[6] 11.51±0.50 km[7] 12.944±0.103 km[8] 12.991 km[9] 12.99 km (taken)[4] 13.54±0.28 km[10]
Synodic rotation period	2.8881±0.0006 h[11] 2.8899±0.0006 h[12] 13.6816±0.0005 h[13]
Geometric albedo	0.081±0.004[10] 0.1392[9] 0.1413±0.0237[8] 0.208±0.034[6] 0.474±0.340[7]
Spectral type	S [4]
Absolute magnitude (H)	11.12[7] · 11.73±0.39[14] · 11.9[1] · 12.70[10] · 12.19[8] · 12.19±0.11[4][11][9]

The asteroid was named after the Queen Hypsipyle from Greek mythology and is one of the principal members of the Phocaea family.^[5]: 23