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249680 (1999 VH227)
Classification: Main-belt Asteroid          SPK-ID: 2249680
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2999474835782639 4.621e-08  
a 3.013864486593541 1.7224e-08 au
q 2.109863417993912 1.3734e-07 au
i 21.06068499457475 4.0415e-06 deg
node 266.8389432101908 1.7715e-05 deg
peri 55.55190210730681 2.1395e-05 deg
M 1.891445691232257 9.7017e-06 deg
tp 2458990.459036607635
(2020-May-20.95903661)
5.1507e-05 TDB
period 1911.102622722711
5.23
1.6382e-05
4.485e-08
d
yr
n .1883729297001932 1.6148e-09 deg/d
Q 3.91786555519317 2.239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      7649 days (20.94 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 22:33:25  

Additional Information
 Earth MOID = 1.16407 au 
 Jupiter MOID = 1.66825 au 
 T_jup = 3.082 
[ 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 14.2   n/a MPO433636  
diameter diameter 9.361 km 0.744 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.042   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249680 (1999 VH227)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1999 VH227 = 2004 LM18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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