32145 Katberman

32145 Katberman (provisional designation 2000 LE₃₀) is a stony asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. The asteroid was discovered on 7 June 2000, by the LINEAR team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, United States. It was named for Katharine Berman, a 2016 Intel STS awardee.^[2]

32145 Katberman

Discovery[1]
Discovered by	LINEAR
Discovery site	Lincoln Lab's ETS
Discovery date	7 June 2000
Designations
MPC designation	(32145) Katberman
Named after	Katharine B. Berman (2016 Intel STS awardee)[2]
Alternative designations	2000 LE30 · 1996 MV 1998 YL15 · 1999 AL37
Minor planet category	main-belt · (inner)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	20.76 yr (7,582 days)
Aphelion	2.8399 AU
Perihelion	1.9889 AU
Semi-major axis	2.4144 AU
Eccentricity	0.1762
Orbital period (sidereal)	3.75 yr (1,370 days)
Mean anomaly	236.95°
Mean motion	0° 15m 45.72s / day
Inclination	9.0211°
Longitude of ascending node	105.91°
Argument of perihelion	139.73°
Physical characteristics
Dimensions	2.91 km (calculated)[3] 4.411±0.775 km[4][5]
Synodic rotation period	9.1292±0.0095 h[6] 9.140±0.090 h[7] 9.1695±0.0095 h[3][6]
Geometric albedo	0.1578±0.0624[4] 0.158±0.062[5] 0.20 (assumed)[3]
Spectral type	S[3]
Absolute magnitude (H)	14.4[4] · 14.578±0.005 (R)[6] · 14.6[1] · 14.670±0.250 (R)[7] · 14.68±0.22[8] · 15.04[3]

Orbit and classification

Katberman orbits the Sun in the inner main-belt at a distance of 2.0–2.8 AU once every 3 years and 9 months (1,370 days). Its orbit has an eccentricity of 0.18 and an inclination of 9° with respect to the ecliptic.^[1]

The asteroid's observation arc begins 4 years prior to its official discovery observation, with a precovery taken by the Steward Observatory's Spacewatch survey at Kitt Peak in June 1996.^[2]

Physical characteristics

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Katberman measures 4.4 kilometers in diameter and its surface has an albedo of 0.16,^[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 2.9 kilometers with an absolute magnitude of 15.04.^[3]

Rotation period

In October 2012, and January 2014, three rotational lightcurves of Katberman were obtained from photometric observations at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 9.14, 9.17 and 9.13 hours, respectively, with a corresponding brightness variation of 0.85, 0.80 and 0.70 in magnitude (U=2/2/2).^[6][7]

Naming

This minor planet was named after Katharine Barr Berman (born 1998) awardee in the Intel Science Talent Search of 2016. She was a finalist for her cellular and molecular biology project. At the time, she attended the U.S. Hastings High School in New York.^[2] The official naming citation was published by the Minor Planet Center on 21 May 2016 (M.P.C. 100315).^[9]