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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .213455890653548 3.5147e-08  
a 2.325011828044609 5.3971e-09 au
q 1.828724357509314 8.0804e-08 au
i 6.902644200438114 3.5938e-06 deg
node 302.8049643408853 2.8913e-05 deg
peri 38.0205123418127 2.9956e-05 deg
M 295.8089567239575 9.4512e-06 deg
tp 2459231.391587749294
(2021-Jan-16.89158775)
3.4354e-05 TDB
period 1294.899838787451
3.55
4.5089e-06
1.234e-08
d
yr
n .2780137808474094 9.6805e-10 deg/d
Q 2.821299298579905 6.5492e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2710  
   data-arc span      41138 days (112.63 yr)  
   first obs. used      1907-09-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41585  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:09:38  

Additional Information
 Earth MOID = .825358 au 
 Jupiter MOID = 2.58472 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 12.6   n/a MPO473770  
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-August); 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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