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17809 (1998 FR78)
Classification: Outer Main-belt Asteroid          SPK-ID: 2017809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1193055023943035 4.8831e-08  
a 3.21703723400492 1.9585e-08 au
q 2.833226990580783 1.5594e-07 au
i 15.64966980561566 5.0077e-06 deg
node 178.0904572726027 1.6376e-05 deg
peri 209.2766134061555 2.2455e-05 deg
M 44.3934359068626 1.5636e-05 deg
tp 2458340.604466080751
(2018-Aug-10.10446608)
9.1066e-05 TDB
period 2107.572669239289
5.77
1.9246e-05
5.269e-08
d
yr
n .1708126155051816 1.5599e-09 deg/d
Q 3.600847477429057 2.1922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      10086 days (27.61 yr)  
   first obs. used      1992-04-26  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50514  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:22:45  

Additional Information
 Earth MOID = 1.84508 au 
 Jupiter MOID = 1.88538 au 
 T_jup = 3.121 
[ show covariance matrix ]

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 12.7   n/a MPO431703  
diameter diameter 16.278 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17809 (1998 FR78)          Discovered 1998-Mar-24 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FR78 = 2000 QJ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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