A three-dimensional model of 160 Una based on its light curve.
|Discovered by||C. H. F. Peters|
|Discovery date||February 20, 1876|
|Minor planet category||Main belt|
|Epoch January 30, 2005 (JD 2453400.5)|
|Aphelion||435.556 Gm (2.912 AU)|
|Perihelion||380.561 Gm (2.544 AU)|
|408.058 Gm (2.728 AU)|
|1645.485 d (4.51 a)|
Average orbital speed
|Mass||5.6×1017 kg (assumed)|
|0.234 d (5.61 h) 1|
160 Una is a fairly large and dark, primitive Main belt asteroid that was discovered by German-American astronomer C. H. F. Peters on February 20, 1876 in Clinton, New York. It is named after a character in Edmund Spenser's epic poem The Faerie Queene (1590).
In the Tholen classification system it is categorized as a CX-type, while the Bus asteroid taxonomy system lists it as an Xk asteroid. Photometric observations of this asteroid made at the Torino Observatory in Italy during 1990–1991 were used to determine a synodic rotation period of 5.61 ± 0.01 hours.
- Yeomans, Donald K., 160 Una, JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25.
- di Martino, M. et al. (February 1994), Lightcurves and rotational periods of nine main belt asteroids, Icarus 107 (2): 269–275, Bibcode:1994Icar..107..269D, doi:10.1006/icar.1994.1022.
- Warner, Brian D. (December 2007), Initial Results of a Dedicated H-G Project, Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34: 113–119, Bibcode:2007MPBu...34..113W.
- Numbered Minor Planets 1–5000, Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07.
- DeMeo, Francesca E. et al. (July 2009), An extension of the Bus asteroid taxonomy into the near-infrared, Icarus 202 (1): 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, retrieved 2013-04-08. See appendix A.
- Orbital simulation from JPL (Java) / Ephemeris
- 2011-Jan-24 Occultation / (2011 Asteroidal Occultation Results for North America)
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