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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 ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150721149455868 3.8365e-08  
a 2.722605362945277 8.0973e-09 au
q 2.137048869374439 1.0444e-07 au
i 12.89823286166944 3.953e-06 deg
node 104.4755047749802 1.8141e-05 deg
peri 248.2442919034329 1.9881e-05 deg
M 49.9502719562234 9.0688e-06 deg
tp 2458772.827368807382
(2019-Oct-16.32736881)
4.1084e-05 TDB
period 1640.874894558617
4.49
7.3202e-06
2.004e-08
d
yr
n .2193951538863889 9.7876e-10 deg/d
Q 3.308161856516114 9.8388e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3083  
   data-arc span      42687 days (116.87 yr)  
   first obs. used      1903-12-29  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42835  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:06  

Additional Information
 Earth MOID = 1.16894 au 
 Jupiter MOID = 2.22624 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 7.587 h n/a LCDB (Rev. 2020-October); 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.]
[Colazo, M.; Fornari, C.; Santucho, M.; Mottino, A.; et al. (2020) Minor Planet Bull. 47, 188-191.]
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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