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100869 (1998 HQ71)
Classification: Main-belt Asteroid          SPK-ID: 2100869
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07284831992275564 4.4018e-08  
a 3.048314402579904 2.9023e-08 au
q 2.82624981975562 1.3765e-07 au
i 10.6910733007007 5.783e-06 deg
node 50.80923586539566 2.6577e-05 deg
peri 264.5230256081022 5.4328e-05 deg
M 316.5750289105086 5.1304e-05 deg
tp 2459234.990418176373
(2021-Jan-20.49041818)
0.00027806 TDB
period 1943.963310177604
5.32
2.7762e-05
7.601e-08
d
yr
n .1851886803188223 2.6447e-09 deg/d
Q 3.270378985404189 3.1137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      7687 days (21.05 yr)  
   first obs. used      1998-04-19  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55032  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:57  

Additional Information
 Earth MOID = 1.83896 au 
 Jupiter MOID = 1.94624 au 
 T_jup = 3.207 
[ 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 14.8   n/a MPO474883  
diameter diameter 4.372 km 1.684 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.134   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100869 (1998 HQ71)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HQ71 = 2000 SC271 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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