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JPL Small-Body Database Browser
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504 Cora (A902 NB)
Classification: Main-belt Asteroid          SPK-ID: 2000504
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150678999563609 3.997e-08  
a 2.722657910222277 8.519e-09 au
q 2.137101591171197 1.0917e-07 au
i 12.89775556448699 4.0386e-06 deg
node 104.4753272069227 1.918e-05 deg
peri 248.1751030343256 2.0846e-05 deg
M 322.2391003959669 9.2712e-06 deg
tp 2458772.618627686621
(2019-Oct-16.11862769)
4.248e-05 TDB
period 1640.922399014174
4.49
7.7015e-06
2.109e-08
d
yr
n .219388802429828 1.0297e-09 deg/d
Q 3.308214229273356 1.0351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2791  
   data-arc span      42342 days (115.93 yr)  
   first obs. used      1903-12-29  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44265  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:43:59  

Additional Information
 Earth MOID = 1.16808 au 
 Jupiter MOID = 2.22241 au 
 T_jup = 3.288 
[ 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 10.0   n/a MPO435699  
diameter diameter 30.438 km 0.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.588 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Higgins, D. (2011) Minor Planet Bull. 38, 41-46.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pilcher, F. (2018) Minor Planet Bull. 45, 356-359.]
[Polakis, T. (2018) Minor Planet Bull. 45, 347-352.]
geometric albedo albedo 0.239   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B X   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)

504 Cora (A902 NB)          Discovered 1902-Jun-30 by Bailey, S. I. at Arequipa
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A902 NB = 1947 OH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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