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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03999041962312829 2.7964e-08  
a 2.231556446251465 6.8444e-09 au
q 2.142315567553172 6.2696e-08 au
i 3.937983450885131 3.7633e-06 deg
node 38.07972151739398 4.7334e-05 deg
peri 70.4817885627229 6.9592e-05 deg
M 190.3225214022508 5.1041e-05 deg
tp 2459970.394341851579
(2023-Jan-25.89434185)
0.00017318 TDB
period 1217.615707010566
3.33
5.6019e-06
1.534e-08
d
yr
n .2956597865215252 1.3602e-09 deg/d
Q 2.320797324949758 7.1182e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      8350 days (22.86 yr)  
   first obs. used      1998-08-26  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:54:38  

Additional Information
 Earth MOID = 1.16318 au 
 Jupiter MOID = 2.70034 au 
 T_jup = 3.637 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.51   n/a E2021B10  
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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