| 词条 | 172 Baucis |
| 释义 |
| minorplanet= yes | mpc_name= (172) Baucis | background= #D6D6D6 | name= 172 Baucis | pronounced={{IPAc-en|'|b|ɔː|s|ᵻ|s}} | discoverer= A. Borrelly | discovered= 5 February 1877 | mp_category= Main belt | orbit_ref= | semimajor= {{Convert|2.3799|AU|Gm|abbr=on}} | perihelion= {{Convert|2.1073|AU|Gm|abbr=on}} | aphelion= {{Convert|2.6525|AU|Gm|abbr=on|lk=on}} | period= 3.67 yr (1341.0 d) | inclination= 10.028° | eccentricity= 0.11454 | rotation= {{Convert|27.417|h|d|abbr=on|lk=on}}[3] | spectral_type= S | abs_magnitude= 8.79 | albedo= {{val|0.1382|0.006}} | epoch= 31 July 2016 (JD 2457600.5) | asc_node= 331.98° | arg_peri= 359.20° | mean_anomaly= 175.49° | mean_motion= {{Deg2DMS|0.26845|sup=ms}} / day | observation_arc= 133.62 yr (48806 d) | uncertainty= 0 | mean_radius= {{val|31.215|0.6}} km | moid= {{Convert|1.09593|AU|Gm|abbr=on}} | jupiter_moid= {{Convert|2.67257|AU|Gm|abbr=on}} | tisserand= 3.510 }} Baucis (minor planet designation: 172 Baucis) is a large main belt asteroid that was discovered by French astronomer Alphonse Borrelly on February 5, 1877, and named after a fictional character in the Greek legend of Baucis and Philemon. The adjectival form of the name is Baucidian. It is classified as an S-type asteroid based upon its spectrum. Photometric observations of this asteroid from the southern hemisphere during 2003 gave a light curve that indicated a slow synodic rotation period of 27.417 ± 0.013 hours and a brightness variation of 0.25 in magnitude.[3]Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo material. This may have been caused by fragmentation of an asteroid substrate with the spectral properties of CO3/CV3 carbonaceous chondrites.[5]References1. ^1 2 {{Citation | last1 = Bembrick | first1 = C. S. | last2 = Richards | first2 = T. | last3 = Bolt | first3 = G. | last4 = Pereghy | first4 = B. | last5 = Higgins | first5 = D. | last6 = Allen | first6 = W. H. | display-authors = 1 | title = 172 Baucis - a slow rotator | work = The Minor Planet Bulletin | volume = 31 | issue = 3 | pages = 51–52 | bibcode = 2004MPBu...31...51B | postscript= .|date=September 2004}} [1][2]2. ^1 {{Citation | last1 = Gil-Hutton | first1 = R. | last2 = Mesa | first2 = V. | last3 = Cellino | first3 = A. | last4 = Bendjoya | first4 = P. | last5 = Peñaloza | first5 = L. | last6 = Lovos | first6 = F. | display-authors = 1 | title = New cases of unusual polarimetric behavior in asteroids | work = Astronomy and Astrophysics | volume = 482 | issue = 1 | pages = 309–314 | doi = 10.1051/0004-6361:20078965 | bibcode = 2008A&A...482..309G | postscript= .|date=April 2008}} }} External links
7 : Background asteroids|Discoveries by Alphonse Borrelly|Minor planets named from Greek mythology|Named minor planets|S-type asteroids (Tholen)|L-type asteroids (SMASS)|Astronomical objects discovered in 1877 |
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