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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2019796604138704 4.2737e-08  
a 2.425023288793688 1.0381e-08 au
q 1.935217908427411 1.0299e-07 au
i 3.512395021839823 5.6827e-06 deg
node 47.38529647492433 5.893e-05 deg
peri 215.6203391851842 6.0253e-05 deg
M 171.6848360294647 1.1224e-05 deg
tp 2457942.688086388754
(2017-Jul-08.18808639)
4.3153e-05 TDB
period 1379.343070575008
3.78
8.8572e-06
2.425e-08
d
yr
n .2609938076173656 1.6759e-09 deg/d
Q 2.914828669159964 1.2478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      9041 days (24.75 yr)  
   first obs. used      1994-03-13  
   last obs. used      2018-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:45:04  

Additional Information
 Earth MOID = .920625 au 
 Jupiter MOID = 2.16621 au 
 T_jup = 3.480 
[ 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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