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218 Bianca (A880 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172596455427389 2.1254e-08  
a 2.666508286429595 7.6274e-09 au
q 2.353834469926084 5.4906e-08 au
i 15.1985213893436 5.789e-07 deg
node 170.5751839367499 3.58e-06 deg
peri 62.62362766477608 8.0769e-06 deg
M 172.6683925909812 6.9392e-06 deg
tp 2458437.678054618807
(2018-Nov-15.17805462)
2.977e-05 TDB
period 1590.42367984361
4.35
6.824e-06
1.868e-08
d
yr
n .2263547786432603 9.7122e-10 deg/d
Q 2.979182102933105 8.5218e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3262  
   data-arc span      46594 days (127.57 yr)  
   first obs. used      1893-08-24  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:03:35  

Additional Information
 Earth MOID = 1.38648 au 
 Jupiter MOID = 2.07886 au 
 T_jup = 3.323 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456361.5 (2013-Mar-10.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161891869630494 2.1246e-08  
q 2.357786386921782 5.4582e-08 au
tp 2456847.706499668294
(2014-Jul-09.20649967)
2.9702e-05 TDB
node 170.6565923153829 3.5793e-06 deg
peri 62.74538191719521 8.207e-06 deg
i 15.1962422418121 5.786e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3262  
   data-arc span      46594 days (127.57 yr)  
   first obs. used      1893-08-24  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:03:35  

Additional Information
 Jupiter MOID = 2.07886 au 
 T_jup = 3.323 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.513959768189611E-16 -1.151644399370536E-15 -3.2384606570357E-13 -5.043221337568556E-15 -1.060518640533397E-13 7.880177457072012E-16
q -1.151644399370536E-15 2.979193491682724E-15 8.539207551524716E-13 1.25946426349098E-14 2.784102144127052E-13 -2.080312569358653E-15
tp -3.2384606570357E-13 8.539207551524716E-13 8.822067985252736E-10 1.42172461841723E-11 2.174436468857162E-10 -4.853104372775333E-12
node -5.043221337568556E-15 1.25946426349098E-14 1.42172461841723E-11 1.281166084680291E-11 -8.285891232723166E-12 -2.880200182399355E-13
peri -1.060518640533397E-13 2.784102144127052E-13 2.174436468857162E-10 -8.285891232723166E-12 6.735510987362776E-11 -8.648463741684024E-13
i 7.880177457072012E-16 -2.080312569358653E-15 -4.853104372775333E-12 -2.880200182399355E-13 -8.648463741684024E-13 3.347741388146316E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.57   n/a E2021B10 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. 2020-October); 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.]
[Alton, K.B. (2019) Minor Planet Bull. 46, 114-117.]
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 (A880 RA)          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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