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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3079990673859426 3.5444e-08  
a 2.608668634592365 7.6934e-09 au
q 1.805201128018956 9.2732e-08 au
i 3.555855738936412 3.7981e-06 deg
node 295.7539890791821 7.0986e-05 deg
peri 80.67703514974176 7.1429e-05 deg
M 314.6531850254804 5.6757e-06 deg
tp 2458794.352358727549
(2019-Nov-06.85235873)		 2.426e-05 TDB
period 1538.958120457435
4.21		 6.808e-06
1.864e-08		 d
yr
n .2339244942500416 1.0348e-09 deg/d
Q 3.412136141165774 1.0063e-08 au
   Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      7769 days (21.27 yr)  
   first obs. used      1998-08-20  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:18:19  

Additional Information
 Earth MOID = .810076 au 
 Jupiter MOID = 2.07883 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3108574248729111 3.5816e-08  
q 1.796492945586349 9.4073e-08 au
tp 2457251.985597773349
(2015-Aug-17.48559777)		 2.3644e-05 TDB
node 296.3414412966027 7.1119e-05 deg
peri 79.56543387504125 7.1527e-05 deg
i 3.554947582023588 3.7967e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      7769 days (21.27 yr)  
   first obs. used      1998-08-20  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:18:19  

Additional Information
 Jupiter MOID = 2.07883 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.282763289339915E-15 -3.364308165696561E-15 5.067815565528611E-15 1.15541462180098E-14 -2.186813150075977E-14 -2.137327932926445E-15
q -3.364308165696561E-15 8.849773920022522E-15 -3.536955850401482E-14 -3.010163552930205E-14 4.873127648533961E-14 6.007201352243853E-15
tp 5.067815565528611E-15 -3.536955850401482E-14 5.590590760996354E-10 -1.143174364858716E-11 1.96345568630268E-10 2.823700027085325E-13
node 1.15541462180098E-14 -3.010163552930205E-14 -1.143174364858716E-11 5.057975649299977E-9 -5.051762066453764E-9 -1.588402443807475E-12
peri -2.186813150075977E-14 4.873127648533961E-14 1.96345568630268E-10 -5.051762066453764E-9 5.116051025168201E-9 1.606811373610535E-12
i -2.137327932926445E-15 6.007201352243853E-15 2.823700027085325E-13 -1.588402443807475E-12 1.606811373610535E-12 1.441465398944218E-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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