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172 Baucis
Classification: Main-belt Asteroid          SPK-ID: 2000172
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150409321866141 4.4587e-08  
a 2.379620676728947 6.6267e-09 AU
q 2.105866895827508 1.0597e-07 AU
i 10.02873613560239 5.5213e-06 deg
node 331.9804002917626 2.6251e-05 deg
peri 359.2092580621078 3.2683e-05 deg
M 14.35193743451199 1.9817e-05 deg
tp 2456947.047495421159
(2014-Oct-16.54749542)
7.3762e-05 JED
period 1340.787732401164
3.67
5.6006e-06
1.533e-08
d
yr
n .268498876668039 1.1216e-09 deg/d
Q 2.653374457630386 7.389e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      40226 days (110.13 yr)  
   first obs. used      1904-08-17  
   last obs. used      2014-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57977  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:44:59  

Additional Information
 Earth MOID = 1.09581 AU 
 T_jup = 3.510 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.79 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
diameter diameter 62.43 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
rotation period rot_per 27.417 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Bembrick, C.S.; Richards, T.; Bolt, G.; Pereghy, B.; et al. (2004) Minor Planet Bul. 31, 51-52.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1382   0.006 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
B-V BV .890 mag .019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=3.73, mean=8.30, max.=16.81) deg.
U-B UB .499 mag .040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=3.73, mean=8.30, max.=16.81) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

172 Baucis          Discovered 1877-Feb-05 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A921 EE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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