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52817 (1998 QF99)
Classification: Main-belt Asteroid          SPK-ID: 2052817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03999041977712085 2.796e-08  
a 2.231556446624794 6.7199e-09 au
q 2.142315567567928 6.2694e-08 au
i 3.937983222576827 3.5627e-06 deg
node 38.07972211232429 4.7229e-05 deg
peri 70.48178354032196 6.7826e-05 deg
M 190.3225254852143 4.9067e-05 deg
tp 2459970.394328185926
(2023-Jan-25.89432819)
0.00016667 TDB
period 1217.615707316118
3.33
5.4999e-06
1.506e-08
d
yr
n .2956597864473314 1.3355e-09 deg/d
Q 2.32079732568166 6.9886e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1483  
   data-arc span      8384 days (22.95 yr)  
   first obs. used      1998-08-26  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:07:30  

Additional Information
 Earth MOID = 1.16318 au 
 Jupiter MOID = 2.70034 au 
 T_jup = 3.637 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03991931039530955 2.8049e-08  
q 2.141889648804645 6.2903e-08 au
tp 2457537.664827384545
(2016-May-29.16482738)
0.00016404 TDB
node 38.10714594364404 4.7226e-05 deg
peri 71.01561068200292 6.7825e-05 deg
i 3.938870539947265 3.5628e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1483  
   data-arc span      8384 days (22.95 yr)  
   first obs. used      1998-08-26  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:07:30  

Additional Information
 Jupiter MOID = 2.70034 au 
 T_jup = 3.637 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.867375083436148E-16 -1.754924773673838E-15 4.351324823257428E-13 -3.090959129115445E-15 1.447831018307523E-13 5.034156993525206E-16
q -1.754924773673838E-15 3.956793001074315E-15 -7.592894779061781E-13 6.838840521512796E-15 -2.629547331567753E-13 -1.07794009625277E-15
tp 4.351324823257428E-13 -7.592894779061781E-13 2.690930250783181E-8 -3.016691495222278E-11 7.993585969366875E-9 2.108226046940628E-12
node -3.090959129115445E-15 6.838840521512796E-15 -3.016691495222278E-11 2.230311685808773E-9 -2.233789943652326E-9 -2.931030949614595E-11
peri 1.447831018307523E-13 -2.629547331567753E-13 7.993585969366875E-9 -2.233789943652326E-9 4.600283443009615E-9 2.988341001400568E-11
i 5.034156993525206E-16 -1.07794009625277E-15 2.108226046940628E-12 -2.931030949614595E-11 2.988341001400568E-11 1.269330946748772E-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 15.52   n/a MPO636797  
diameter diameter 2.151 km 0.338 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52817 (1998 QF99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QF99 = 2000 EK78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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