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JPL Small-Body Database Browser
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630 Euphemia (A907 EM)
Classification: Main-belt Asteroid          SPK-ID: 2000630
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124436136864049 3.3467e-08  
a 2.62300008309289 8.9684e-09 au
q 2.328060475050185 8.6621e-08 au
i 13.86709626023108 4.1519e-06 deg
node 105.366992943392 1.5312e-05 deg
peri 40.07388483550289 2.4097e-05 deg
M 238.2748557000439 1.9377e-05 deg
tp 2459525.154836433942
(2021-Nov-06.65483643)
8.4303e-05 TDB
period 1551.657565924012
4.25
7.958e-06
2.179e-08
d
yr
n .2320099536817712 1.1899e-09 deg/d
Q 2.917939691135595 9.9769e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2359  
   data-arc span      41213 days (112.84 yr)  
   first obs. used      1907-03-07  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38671  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:32:40  

Additional Information
 Earth MOID = 1.35807 au 
 Jupiter MOID = 2.17811 au 
 T_jup = 3.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO448917  
diameter diameter 15.542 km 0.439 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 350. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
geometric albedo albedo 0.291   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

630 Euphemia (A907 EM)          Discovered 1907-Mar-07 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A907 EM = A924 DC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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