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212693 (2007 HD18)
Classification: Main-belt Asteroid          SPK-ID: 2212693
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07412857820354068 4.9129e-08  
a 2.722335162511937 3.1135e-08 au
q 2.520532327521422 1.3164e-07 au
i 5.71251750758513 6.3617e-06 deg
node 60.5124630946963 5.7312e-05 deg
peri 212.7159219065452 7.5077e-05 deg
M 192.1242141385913 4.7754e-05 deg
tp 2459365.561546160476
(2021-May-31.06154616)
0.00021546 TDB
period 1640.630631776452
4.49
2.8146e-05
7.706e-08
d
yr
n .2194278181982967 3.7644e-09 deg/d
Q 2.924137997502451 3.3443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      340  
   data-arc span      8480 days (23.22 yr)  
   first obs. used      1995-10-21  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58007  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:13:50  

Additional Information
 Earth MOID = 1.50618 au 
 Jupiter MOID = 2.13849 au 
 T_jup = 3.347 
[ 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 15.9   n/a MPO433390  
diameter diameter 5.066 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.033   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212693 (2007 HD18)          Discovered 2007-Apr-16 by CSS at Catalina
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2007 HD18 = 2005 YZ286 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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