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JPL Small-Body Database Browser
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628 Christine (A907 EK)
Classification: Main-belt Asteroid          SPK-ID: 2000628
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04396743470085224 3.9974e-08  
a 2.581072209723474 8.447e-09 au
q 2.467589085884272 1.0299e-07 au
i 11.52791282738223 4.3817e-06 deg
node 112.1111553048454 2.1148e-05 deg
peri 207.3674097140883 5.3102e-05 deg
M 202.8113813239506 4.9706e-05 deg
tp 2459261.828525561542
(2021-Feb-16.32852556)
0.00020976 TDB
period 1514.602464271358
4.15
7.4352e-06
2.036e-08
d
yr
n .2376861311744849 1.1668e-09 deg/d
Q 2.694555333562675 8.8184e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2542  
   data-arc span      40972 days (112.18 yr)  
   first obs. used      1907-03-07  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45087  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:11:03  

Additional Information
 Earth MOID = 1.45668 au 
 Jupiter MOID = 2.484 au 
 T_jup = 3.395 
[ 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 9.3   n/a MPO473770 IRAS observations used: 28
diameter diameter 48.239 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.1783 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2003) Minor Planet Bull. 30, 69-70.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.120   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.813   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.88, mean=6.03, max.=9.18) deg.
U-B UB 0.321   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.88, mean=6.03, max.=9.18) deg.
Tholen spectral type spec_T SD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

628 Christine (A907 EK)          Discovered 1907-Mar-07 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A907 EK = 1977 AT2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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