1481 Tübingia

1481 Tübingia, provisional designation 1938 DR, is a dark asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 7 February 1938, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named for the German city of Tübingen.[12]

1481 Tübingia
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date7 February 1938
Designations
(1481) Tubingia
Named after
Tübingen (German city)[2]
1938 DR · 1930 UL
1933 FT1 · 1933 FY1
1935 SY1 · 1938 CN
1938 ES · 1939 LD
1941 WF · 1950 OQ
1955 LA · 1959 GY
A907 GQ · A912 FB
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc84.28 yr (30,783 days)
Aphelion3.1492 AU
Perihelion2.8896 AU
3.0194 AU
Eccentricity0.0430
5.25 yr (1,916 days)
283.84°
0° 11m 16.44s / day
Inclination3.5098°
353.74°
312.18°
Physical characteristics
Dimensions33.26±1.7 km (IRAS:5)[4]
33.770±0.139 km[5]
35.20±0.73 km[6]
37.316±0.332 km[7]
40.12±0.51 km[8]
24 h[9]
160±20 (outdated)[10]
0.082±0.002[8]
0.0920±0.0143[7]
0.104±0.020 [6][5]
0.1167±0.013 (IRAS:5)[4]
0.1168 (SIMPS)[3]
C [3]
B–V = 0.920[1]
U–B = 0.370[1]
10.34[1][4][6][8] · 10.35[3][7][10] · 10.87±0.68[11]

    Orbit and classification

    Tübingia orbits the Sun in the outer main-belt at a distance of 2.9–3.1 AU once every 5 years and 3 months (1,916 days). Its orbit has an eccentricity of 0.04 and an inclination of 4° with respect to the ecliptic.[1] It was first identified as A907 GQ at the U.S. Taunton Observatory in 1907. The asteroid's first used observation was made at Heidelberg in 1933, extending the body's observation arc by 5 years prior to its official discovery observation.[12]

    Physical characteristics

    The asteroid has been characterized as a C-type asteroid.[3]

    Rotation period

    In October 2008, a rotational lightcurve of Tübingia was obtained form photometric observations by James W. Brinsfield at Via Capote Observatory (G69) in California. Analysis gave a longer-than average rotation period of 24 hours with a brightness variation of 0.20 magnitude (U=2).[9] The result supersedes a much longer period obtained in the 1980s.[10]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tübingia measures between 33.26 and 40.12 kilometers in diameter, and its surface has an albedo of 0.082 to 0.117.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is, an albedo of 0.117 and a diameter of 33.26 kilometers using an absolute magnitude of 10.35.[3]

    Naming

    This minor planet was named after Tübingen, city in southern Germany and birthplace of astronomer Johannes Kepler.[2] The official naming citation was published by the Minor Planet Center in April 1953 (M.P.C. 909).[13]

    References
    1. "JPL Small-Body Database Browser: 1481 Tubingia (1938 DR)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
    2. Schmadel, Lutz D. (2007). "(1481) Tübingia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 118. doi:10.1007/978-3-540-29925-7_1482. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1481) Tübingia". Asteroid Lightcurve Database (LCDB). Retrieved 16 December 2016.
    4. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
    5. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 16 December 2016.
    6. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 16 December 2016.
    7. Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    8. 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. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    9. Brinsfield, James W. (April 2009). "Asteroid Lightcurve Analysis at the Via Capote Observatory: 2008 4th Quarter". The Minor Planet Bulletin. 36 (2): 64–66. Bibcode:2009MPBu...36...64B. ISSN 1052-8091. Retrieved 16 December 2016.
    10. Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 16 December 2016.
    11. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 16 December 2016.
    12. "1481 Tubingia (1938 DR)". Minor Planet Center. Retrieved 16 December 2016.
    13. Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

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