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JPL Small-Body Database Browser
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85668 (1998 QH53)
Classification: Main-belt Asteroid          SPK-ID: 2085668
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3081126014785119 3.53e-08  
a 2.608843823599424 7.496e-09 au
q 1.805026166259057 9.2461e-08 au
i 3.556088776055873 3.5496e-06 deg
node 295.7529152576828 7.0718e-05 deg
peri 80.71057893919037 7.1151e-05 deg
M 48.20068524967142 5.4104e-06 deg
tp 2458794.426920870850
(2019-Nov-06.92692087)		 2.3159e-05 TDB
period 1539.113149579124
4.21		 6.6335e-06
1.816e-08		 d
yr
n .2339009319090303 1.0081e-09 deg/d
Q 3.41266148093979 9.8056e-09 au
   Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      7837 days (21.46 yr)  
   first obs. used      1998-08-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:36:53  

Additional Information
 Earth MOID = .810698 au 
 Jupiter MOID = 2.08145 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457182.5 (2015-Jun-09.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3107914252713941 3.5703e-08  
q 1.796659659732211 9.3781e-08 au
tp 2457251.969393959677
(2015-Aug-17.46939396)		 2.2952e-05 TDB
node 296.3403515350742 7.0866e-05 deg
peri 79.55288536558218 7.1265e-05 deg
i 3.554768276783943 3.5472e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      7837 days (21.46 yr)  
   first obs. used      1998-08-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:36:53  

Additional Information
 Jupiter MOID = 2.08145 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.274714902039167E-15 -3.343505951923854E-15 -2.525302631959077E-15 1.206623115579593E-14 -2.396271644001187E-14 -2.221944856054684E-15
q -3.343505951923854E-15 8.79486538214832E-15 -2.182172942269687E-14 -3.149047240445766E-14 5.290324048192979E-14 6.202725368589225E-15
tp -2.525302631959077E-15 -2.182172942269687E-14 5.268084978976334E-10 -1.096944131098964E-11 1.895802647509917E-10 3.367193339504644E-13
node 1.206623115579593E-14 -3.149047240445766E-14 -1.096944131098964E-11 5.021986734090046E-9 -5.015737990677641E-9 -5.872640245397304E-12
peri -2.396271644001187E-14 5.290324048192979E-14 1.895802647509917E-10 -5.015737990677641E-9 5.078765922134565E-9 5.894064337566424E-12
i -2.221944856054684E-15 6.202725368589225E-15 3.367193339504644E-13 -5.872640245397304E-12 5.894064337566424E-12 1.258292717016649E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO449532  

85668 (1998 QH53)          Discovered 1998-Aug-20 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 QH53 = 2000 DY50 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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