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227963 (2007 HR17)
Classification: Main-belt Asteroid          SPK-ID: 2227963
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120831403059478 4.4756e-08  
a 2.578436016807552 2.0977e-08 au
q 2.289436810965802 1.1877e-07 au
i 6.561739959681756 5.3994e-06 deg
node 211.4785771995353 5.3516e-05 deg
peri 14.90510037904239 6.1444e-05 deg
M 92.25015898086815 3.2775e-05 deg
tp 2458812.976906940379
(2019-Nov-25.47690694)		 0.00013571 TDB
period 1512.282634985987
4.14		 1.8455e-05
5.053e-08		 d
yr
n .2380507397701725 2.905e-09 deg/d
Q 2.867435222649302 2.3328e-08 au
   Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      7240 days (19.82 yr)  
   first obs. used      2000-09-22  
   last obs. used      2020-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52814  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:50  

Additional Information
 Earth MOID = 1.27971 au 
 Jupiter MOID = 2.11043 au 
 T_jup = 3.408 
[ 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 16.49   n/a E2021B55  
diameter diameter 3.483 km 0.612 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227963 (2007 HR17)          Discovered 2007-Apr-16 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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