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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1236348266986703 3.8229e-08  
a 2.722062612702191 9.1159e-09 au
q 2.385520873317826 1.0575e-07 au
i 5.259841531183715 4.4629e-06 deg
node 32.58102971181622 4.2995e-05 deg
peri 14.91173631882706 4.6331e-05 deg
M 12.99477078673298 1.7005e-05 deg
tp 2458541.287729368348
(2019-Feb-26.78772937)
7.746e-05 TDB
period 1640.384257424372
4.49
8.2402e-06
2.256e-08
d
yr
n .2194607747365543 1.1024e-09 deg/d
Q 3.058604352086555 1.0243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2501  
   data-arc span      49271 days (134.90 yr)  
   first obs. used      1885-01-09  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44696  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:39:17  

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 9.5   n/a MPO502154 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2116-Aug-04 11:06 < 00:01 Ceres 0.0299378282219013 0.0299358589389498 0.0299397989085983 3.73024492864861 3.73024114566686 2494128.962581174 0.821135351845821 368.769669153424 42.4607096038348 -76.214703170618 101500.669601799 T 106 CATAB v2.0f-lin.ifort 2019-Dec-13 20:39:32 2019-Dec-13 20:39

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