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JPL Small-Body Database Browser
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646 Kastalia (A907 RL)
Classification: Main-belt Asteroid          SPK-ID: 2000646
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133696420786552 3.6171e-08  
a 2.324422571255468 5.6126e-09 au
q 1.828461359187141 8.2904e-08 au
i 6.902487414502455 3.6566e-06 deg
node 302.8072484050375 2.912e-05 deg
peri 38.11099192262538 3.0178e-05 deg
M 184.4550896577248 9.3841e-06 deg
tp 2459231.685181637339
(2021-Jan-17.18518164)
3.4736e-05 TDB
period 1294.407596018582
3.54
4.6883e-06
1.284e-08
d
yr
n .27811950509817 1.0073e-09 deg/d
Q 2.820383783323794 6.8102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2581  
   data-arc span      40785 days (111.66 yr)  
   first obs. used      1907-09-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41209  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:11:21  

Additional Information
 Earth MOID = .824229 au 
 Jupiter MOID = 2.58272 au 
 T_jup = 3.535 
[ 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 12.5   n/a MPO435701  
diameter diameter 8.153 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.1259 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2018) Minor Planet Bull. 45, 55-56.]
geometric albedo albedo 0.269   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

646 Kastalia (A907 RL)          Discovered 1907-Sep-11 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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