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74044 (1998 HQ98)
Classification: Main-belt Asteroid          SPK-ID: 2074044
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2020219863569524 3.7357e-08  
a 2.42456769401994 9.6252e-09 au
q 1.934751712417136 9.1524e-08 au
i 3.512070855595958 4.5935e-06 deg
node 47.37356952494361 5.8313e-05 deg
peri 215.7099881250198 5.9174e-05 deg
M 275.9928968675293 1.0237e-05 deg
tp 2459322.283229632562
(2021-Apr-17.78322963)
3.9781e-05 TDB
period 1378.954378239319
3.78
8.2114e-06
2.248e-08
d
yr
n .2610673751655631 1.5546e-09 deg/d
Q 2.914383675622744 1.157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1013  
   data-arc span      9543 days (26.13 yr)  
   first obs. used      1994-03-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5374  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:02:49  

Additional Information
 Earth MOID = .920521 au 
 Jupiter MOID = 2.16742 au 
 T_jup = 3.481 
[ 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 15.3   n/a MPO417337  
diameter diameter 5.498 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74044 (1998 HQ98)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HQ98 = 1999 UB35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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