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85821 (1998 XQ10)
Classification: Main-belt Asteroid          SPK-ID: 2085821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05375496321130784 3.4373e-08  
a 2.392487152983729 9.2028e-09 au
q 2.263879094091562 8.4315e-08 au
i 4.78969849822971 3.9922e-06 deg
node 293.9286032240926 4.4406e-05 deg
peri 156.7142208383847 5.9796e-05 deg
M 312.6574045863831 4.0697e-05 deg
tp 2459178.255239505636
(2020-Nov-24.75523951)
0.00015314 TDB
period 1351.676765140413
3.70
7.7989e-06
2.135e-08
d
yr
n .2663358646714645 1.5367e-09 deg/d
Q 2.521095211875896 9.6975e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1423  
   data-arc span      8011 days (21.93 yr)  
   first obs. used      1998-11-25  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:42  

Additional Information
 Earth MOID = 1.28142 au 
 Jupiter MOID = 2.57211 au 
 T_jup = 3.524 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457161.5 (2015-May-19.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05332675744002723 3.411e-08  
q 2.265257798654713 8.3666e-08 au
tp 2457821.421538447363
(2017-Mar-08.92153845)
0.00015279 TDB
node 294.0178110871283 4.4458e-05 deg
peri 155.4088212393352 6.0204e-05 deg
i 4.786127345127 3.9903e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1423  
   data-arc span      8011 days (21.93 yr)  
   first obs. used      1998-11-25  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:42  

Additional Information
 Jupiter MOID = 2.57211 au 
 T_jup = 3.524 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.163485845391285E-15 -2.838652762214066E-15 6.369069398096673E-13 -9.102369710413759E-15 2.129840468638264E-13 -5.688449991444107E-16
q -2.838652762214066E-15 6.999977427428834E-15 -1.128526298167687E-12 2.128260227520912E-14 -4.157944256782478E-13 1.530117738230728E-15
tp 6.369069398096673E-13 -1.128526298167687E-12 2.334398337235091E-8 -1.135045091758841E-11 6.210368935873831E-9 2.707330050106473E-12
node -9.102369710413759E-15 2.128260227520912E-14 -1.135045091758841E-11 1.976548949821017E-9 -1.972421488299328E-9 3.211522631971581E-11
peri 2.129840468638264E-13 -4.157944256782478E-13 6.210368935873831E-9 -1.972421488299328E-9 3.624563758327242E-9 -3.134008225404367E-11
i -5.688449991444107E-16 1.530117738230728E-15 2.707330050106473E-12 3.211522631971581E-11 -3.134008225404367E-11 1.592247062328775E-11

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 14.5   n/a MPO400792  
diameter diameter 4.097 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85821 (1998 XQ10)          Discovered 1998-Dec-15 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1998 XQ10 = 2001 QY98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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