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227966 (2007 HM23)
Classification: Main-belt Asteroid          SPK-ID: 2227966
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02504824110011896 5.3168e-08  
a 2.781032268938907 3.1291e-08 au
q 2.711372302159314 1.5469e-07 au
i 5.289511828252727 6.0975e-06 deg
node 54.13757338172326 6.1495e-05 deg
peri 220.2844049303998 0.00018628 deg
M 288.7409949408726 0.0001817 deg
tp 2459535.808623319273
(2021-Nov-17.30862332)
0.00085785 TDB
period 1693.976842572779
4.64
2.859e-05
7.828e-08
d
yr
n .2125176631418639 3.5867e-09 deg/d
Q 2.850692235718499 3.2075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      303  
   data-arc span      5547 days (15.19 yr)  
   first obs. used      2006-01-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54008  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:50  

Additional Information
 Earth MOID = 1.696 au 
 Jupiter MOID = 2.15477 au 
 T_jup = 3.326 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.15   n/a E2021B55  
diameter diameter 3.492 km 0.612 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227966 (2007 HM23)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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