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JPL Small-Body Database Browser
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218 Bianca
Classification: Main-belt Asteroid          SPK-ID: 2000218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117675240747329 3.2886e-08  
a 2.667498992599506 9.0684e-09 au
q 2.353600406452102 8.7962e-08 au
i 15.19587096073357 4.3087e-06 deg
node 170.5914293594977 1.4906e-05 deg
peri 62.84494073194067 2.4553e-05 deg
M 36.59383778758099 1.9167e-05 deg
tp 2458438.744043966326
(2018-Nov-16.24404397)
8.4645e-05 TDB
period 1591.310113745025
4.36
8.1147e-06
2.222e-08
d
yr
n .2262286884815731 1.1536e-09 deg/d
Q 2.981397578746911 1.0136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      46125 days (126.28 yr)  
   first obs. used      1893-08-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43334  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:39:18  

Additional Information
 Earth MOID = 1.38756 au 
 Jupiter MOID = 2.07993 au 
 T_jup = 3.323 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.5   n/a MPO502154 IRAS observations used: 12
magnitude slope G 0.32   n/a PDS3 (MPC 17258) Fit
diameter diameter 60.62 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 6.337 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Carlsson, M.; Lagerkvist, C.-I. (1981) Astron. Astrophys. Suppl. Ser. 44, 15-22.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Kryszczynska, A.; Colas, F.; Berthier, J.; Michalowski, T.; Pych, W. (1996) Icarus 124, 134-140.]
[Fauerbach, M.; Bennett, T. (2005) Minor Planet Bull. 32, 80-81.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Marciniak, A.; et al. (2007) Astron. Astrophys. 465, 331-337.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J. (2011) Database of Asteroid Models from Inversion Techniques (DAMIT). http://astro.troja.mff.cuni.cz/projects/asteroids3D/web.php]
[Garceran, A.C. (2014) Posting on CALL web site. http://www.MinorPlanet.info/call.html]
[Shevchenko, V.G.; Belksaya, I.N.; Muinon, K.; Penttila, A.; et al. (2016) Plan. Space Sci. 123, 101-116.]
geometric albedo albedo 0.1746   0.008 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV 0.859   0.004 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.55, mean=8.27, max.=12.00) deg.
U-B UB 0.443   0.012 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.55, mean=8.27, max.=12.00) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

218 Bianca          Discovered 1880-Sep-04 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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