531 Zerlina

531 Zerlina, provisional designation 1904 NW, carbonaceous Palladian asteroid from the central region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 12 April 1904.^[16]

531 Zerlina

Lightcurve-based 3D-model of Zerlina
Discovery[1]
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	12 April 1904
Designations
MPC designation	(531) Zerlina
Pronunciation	Italian: [dzerˈliːna][2]
Named after	Zerlina, Masetto's fiancée (Don Giovanni)[3]
Alternative designations	1904 NW · 1955 HA
Minor planet category	main-belt · (middle) Pallas[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	112.56 yr (41,114 days)
Aphelion	3.3356 AU
Perihelion	2.2379 AU
Semi-major axis	2.7867 AU
Eccentricity	0.1970
Orbital period (sidereal)	4.65 yr (1,699 days)
Mean anomaly	104.09°
Mean motion	0° 12m 42.84s / day
Inclination	33.994°
Longitude of ascending node	197.73°
Argument of perihelion	57.751°
Physical characteristics
Dimensions	13.65±0.32 km[5] 13.87±4.02 km[6] 14.11±0.45 km[7] 15.12 km (derived)[8] 15.19±1.3 km[9] 15.8±1.6 km[10] 16±2 km[11] 17.804±0.178 km[12]
Synodic rotation period	12 h[13] 16 h[8] 16.716±0.003 h[14] 16.706±0.001 h[15]
Geometric albedo	0.10±0.02[11] 0.10±0.08[6] 0.101±0.007[12] 0.11±0.02[10] 0.1225 (derived)[8] 0.1460±0.028[9] 0.150±0.030[5] 0.185±0.014[7]
Spectral type	SMASS = B[1] · B[8]
Absolute magnitude (H)	11.80[7][9][12] 12.0[1][8][5][11][10] 12.25[6]

Orbit and characteristics

Observations using the IRAS satellite have shown it to have an absolute magnitude of 11.8, a diameter of 15.19 kilometers, a rotational period of 16.706 hours, and an albedo of 0.1460.^[1]

Naming

It is named for a character in Mozart's opera, Don Giovanni H 57).^[3]