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79549 (1998 QH44)
Classification: Main-belt Asteroid          SPK-ID: 2079549
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 .1768330824488243 4.3249e-08  
a 2.193734642357134 9.2903e-09 au
q 1.805809783474353 9.6808e-08 au
i 7.419382796577353 4.8388e-06 deg
node 142.842140321544 3.2374e-05 deg
peri 178.4510186127469 3.5206e-05 deg
M 262.3070134132529 1.728e-05 deg
tp 2459322.559009550968
(2021-Apr-18.05900955)
5.8305e-05 TDB
period 1186.791882295439
3.25
7.539e-06
2.064e-08
d
yr
n .3033387785764969 1.9269e-09 deg/d
Q 2.581659501239915 1.0933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      12667 days (34.68 yr)  
   first obs. used      1985-08-24  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:42:07  

Additional Information
 Earth MOID = .79317 au 
 Jupiter MOID = 2.72951 au 
 T_jup = 3.639 
[ 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 15.5   n/a MPO453217  
diameter diameter 2.530 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.209   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79549 (1998 QH44)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 QH44 = 1985 QX5 = 1985 SR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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