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210 Isabella
Classification: Main-belt Asteroid          SPK-ID: 2000210
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1236348263685876 3.8317e-08  
a 2.72206261275223 9.1346e-09 au
q 2.385520874260185 1.0601e-07 au
i 5.259841496654178 4.473e-06 deg
node 32.58102977343599 4.2998e-05 deg
peri 14.91173626741743 4.6334e-05 deg
M 12.99477074186414 1.701e-05 deg
tp 2458541.287729571165
(2019-Feb-26.78772957)
7.7483e-05 TDB
period 1640.384257469605
4.49
8.2571e-06
2.261e-08
d
yr
n .2194607747305028 1.1047e-09 deg/d
Q 3.058604351244276 1.0264e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2493  
   data-arc span      49265 days (134.88 yr)  
   first obs. used      1885-01-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44766  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:03:39  

Additional Information
 Earth MOID = 1.39508 au 
 Jupiter MOID = 2.31908 au 
 T_jup = 3.341 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.33   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 86.65 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 6.672 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.0436   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.667   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=1.60, mean=14.61, max.=21.45) deg.
U-B UB 0.248   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=1.60, mean=14.61, max.=21.45) deg.
Tholen spectral type spec_T CF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices
SMASSII spectral type spec_B Cb   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)

210 Isabella          Discovered 1879-Nov-12 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1953 EZ1 = 1962 BF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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