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27831 (1994 DF)
Classification: Main-belt Asteroid          SPK-ID: 2027831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1636963955997798 3.5241e-08  
a 2.65192851857497 1.0887e-08 au
q 2.217817378695984 9.679e-08 au
i 12.87916145773799 5.2287e-06 deg
node 160.0088382441818 1.8093e-05 deg
peri 275.7613390621125 2.5047e-05 deg
M 351.7354198530255 1.7491e-05 deg
tp 2458636.712577887153
(2019-Jun-02.21257789)
7.6715e-05 TDB
period 1577.397497215551
4.32
9.714e-06
2.66e-08
d
yr
n .228224021298042 1.4055e-09 deg/d
Q 3.086039658453956 1.267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1714  
   data-arc span      13724 days (37.57 yr)  
   first obs. used      1982-05-01  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49997  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:08:35  

Additional Information
 Earth MOID = 1.27629 au 
 Jupiter MOID = 2.26996 au 
 T_jup = 3.335 
[ 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 13.6   n/a MPO449167  
diameter diameter 5.025 km 1.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.238   0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

27831 (1994 DF)          Discovered 1994-Feb-18 by Urata, T. at Oohira
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 DF = 1999 GR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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