3674 Erbisbühl

3674 Erbisbühl (prov. designation: 1963 RH) is an stony asteroid and one of the largest Mars-crossers from the innermost regions of the asteroid belt, approximately 11 kilometers (6.8 miles) in diameter. It was discovered on 13 September 1963, by German astronomer Cuno Hoffmeister at his Sonneberg Observatory on Mount Erbisbühl in Eastern Germany.[3]

3674 Erbisbühl
Shape model of Erbisbühl from its lightcurve
Discovery [1]
Discovered byC. Hoffmeister
Discovery siteSonneberg Obs.
Discovery date13 September 1963
Designations
(3674) Erbisbühl
Named after
Mount Erbisbühl
(Eastern Germany)[2]
1963 RH · 1970 OD
1986 AA
Mars-crosser[1][3]
main-belt (inner)[4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc52.80 yr (19,285 days)
Aphelion3.2468 AU
Perihelion1.4723 AU
2.3596 AU
Eccentricity0.3760
3.62 yr (1,324 days)
306.42°
0° 16m 18.84s / day
Inclination21.029°
296.85°
98.240°
Mars MOID0.1997 AU
Physical characteristics
Mean diameter
9.068±1.623 km[5]
10.32±0.71 km[6]
11.28±0.01 h[4][7][lower-alpha 1]
0.249±0.037[6]
0.309±0.126[5]
SMASS = Sk [1]
12.0[1][4] · 12.10[6]

    Orbit and classification

    Erbisbühl orbits the Sun in the inner main-belt at a distance of 1.5–3.2 AU once every 3 years and 7 months (1,324 days). Its orbit has an eccentricity of 0.38 and an inclination of 21° with respect to the ecliptic.[1] The body's observation arc starts in 1963, as no precoveries were taken and no identifications were made prior to its official discovery.[3]

    Naming

    This minor planet was named for Mount Erbisbühl on which the discovering Sonneberg Observatory is located (also see 1039 Sonneberga). Cuno Hoffmeister, discoverer of this asteroid and founder of the observatory, lived and worked at Erbisbühl for many decades.[2] The official naming citation was published by the Minor Planet Center on 2 February 1988 (M.P.C. 12809).[8]

    Physical characteristics

    In the SMASS taxonomic scheme, Erbisbühl is a stony S-type asteroid, characterized as a Sk-subtype, a transitional form to the uncommon K-type asteroid.[1]

    Lightcurve

    A rotational lightcurve for this asteroid was obtained from photometric observations made at the U.S. Antelope Hills Observatory in December 2003. It rendered a rotation period of 11.28±0.01 hours with a brightness variation of 0.40 in magnitude (U=3).[7][lower-alpha 1]

    Diameter and albedo

    According to the survey carried out by the Japanese Akari satellite, Erbisbühl has a high albedo of 0.25 with a corresponding diameter of 10.3 kilometers,[6] while the NEOWISE mission gives a diameter of 9.1 kilometers and an albedo of 0.31.[5] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.8 kilometers.[4]

    Notes
    1. Lightcurve plot of (3674) Erbisbuhl, Robert Koff, Antelope Hills Observatory (H09). Summary figures at LCDB

    References
    1. "JPL Small-Body Database Browser: 3674 Erbisbuhl (1963 RH)" (2016-07-01 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017.
    2. Schmadel, Lutz D. (2007). "(3674) Erbisbühl". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 309. doi:10.1007/978-3-540-29925-7_3672. ISBN 978-3-540-00238-3.
    3. "3674 Erbisbuhl (1963 RH)". Minor Planet Center. Retrieved 28 May 2016.
    4. "LCDB Data for (3674) Erbisbuhl". Asteroid Lightcurve Database (LCDB). Retrieved 28 May 2016.
    5. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 5 December 2016.
    6. Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
    7. Koff, Robert A. (June 2004). "Lightcurve photometry of Mars-crossing asteroids 1474 Beira and 3674 Erbisbuhl" (PDF). Minor Planet Bulletin. 31 (2): 33–34. Bibcode:2004MPBu...31...33K. ISSN 1052-8091. Retrieved 19 March 2020.
    8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 28 May 2016.
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