Discovery [1] | |
---|---|
Discovered by | J. B. Gibson |
Discovery site | El Leoncito Complex |
Discovery date | 21 September 1973 |
Designations | |
(2035) Stearns | |
Named after | Carl Leo Stearns [1] (American astronomer) |
1973 SC ·1973 UG | |
Mars-crosser [2] Hungaria [1] [3] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 44.35 yr (16,199 d) |
Aphelion | 2.1317 AU |
Perihelion | 1.6366 AU |
1.8841 AU | |
Eccentricity | 0.1314 |
2.59 yr (945 d) | |
134.07° | |
0° 22m 51.96s / day | |
Inclination | 27.751° |
77.035° | |
200.71° | |
Earth MOID | 0.6305 AU (245 LD) |
Mars MOID | 0.1655 AU |
Physical characteristics | |
4.82±0.52 km [4] 5.28 km(derived) [3] 6.00±1.20 km [5] | |
51.89±0.20 h [6] 85±0.1 h [7] 93±1 h [8] [a] | |
0.40(assumed) [3] 0.443±0.177 [5] 0.65±0.30 [4] | |
Tholen = E [2] SMASS = X e [2] [3] [9] B–V = 0.737 [2] U–B = 0.280 [2] V–R = 0.440 [7] | |
12.61 [2] [4] [5] 13.0 [3] [10] | |
2035 Stearns, provisional designation 1973 SC, is a bright Hungaria asteroid and sizable Mars-crosser inside the inner regions of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 21 September 1973, by American astronomer James Gibson at the Leoncito Astronomical Complex in Argentina. [1] The transitional E-type asteroid has a long rotation period of 93 hours. [3] It was named after American astronomer Carl Leo Stearns. [1]
Stearns is a dynamical Hungaria asteroid, a large group that forms the innermost dense concentration of asteroids in the Solar System. [1] [3] It is also a Mars-crossing asteroid, a member of the dynamically unstable group, located between the main belt and near-Earth populations, and crossing the orbit of Mars at 1.666 AU. [2]
The asteroid orbits the Sun in the inner main-belt at a distance of 1.64–2.13 AU once every 2 years and 7 months (945 days; semi-major axis of 1.88 AU). Its orbit has an eccentricity of 0.13 and an inclination of 28° with respect to the ecliptic. [2]
The body's observation arc begins with a precovery taken at Palomar Observatory in January 1954, nearly 20 years prior to its official discovery observation at Leoncito. [1]
In the Tholen classification, Stearns is a bright E-type asteroid. [2] while in the SMASS classification and Bus-DeMeo taxonomy, it is an Xe-subtype that transitions from the X-type to the E-type. [9]
Several rotational lightcurve of Stearns have been obtained from photometric observations since 1988. [6] [7] [8] Analysis of the best-rated lightcurve by Robert Stephens at the Center for Solar System Studies ( U81 ) gave a rotation period of 93 hours with a brightness amplitude of 0.20 magnitude ( U=2+ ). This makes the asteroid as close slow rotator. [3] [a]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Stearns measures between 4.82 and 6.00 kilometers in diameter and its surface has an albedo between 0.443 and 0.65. [4] [5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Hungaria family of 0.40, and derives a diameter of 5.28 kilometers based on an absolute magnitude of 13.0. [3]
This minor planet was named after Carl Leo Stearns (1892–1972), American astronomer at Wesleyan University and Van Vleck Observatory who measured a large number of stellar parallaxes. [1] The official naming citation was published by the Minor Planet Center on 1 November 1978 ( M.P.C. 4548). [11] The lunar crater Stearns was also named in his honor.