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27994 (1997 WM1)
Classification: Main-belt Asteroid          SPK-ID: 2027994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07435343836016645 3.2421e-08  
a 3.06099465366819 1.6112e-08 au
q 2.833399176365873 1.0121e-07 au
i 8.454222443060759 4.0017e-06 deg
node 273.0838563127579 2.8171e-05 deg
peri 165.8342722536971 4.3715e-05 deg
M 59.49313647964084 3.1832e-05 deg
tp 2458677.236516767047
(2019-Jul-12.73651677)
0.00017329 TDB
period 1956.105541749133
5.36
1.5444e-05
4.228e-08
d
yr
n .1840391493794813 1.4531e-09 deg/d
Q 3.288590130970507 1.731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1905  
   data-arc span      8196 days (22.44 yr)  
   first obs. used      1997-11-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47396  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:25:20  

Additional Information
 Earth MOID = 1.85003 au 
 Jupiter MOID = 1.91852 au 
 T_jup = 3.213 
[ 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 13.2   n/a MPO337494  
diameter diameter 9.803 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.139   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27994 (1997 WM1)          Discovered 1997-Nov-19 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WM1 = 1999 CQ116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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