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JPL Small-Body Database Browser
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172805 (2004 FQ156)
Classification: Main-belt Asteroid          SPK-ID: 2172805
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183939921345975 4.3421e-08  
a 3.011833586354618 2.4118e-08 au
q 2.655250584421033 1.2797e-07 au
i 2.908269482131763 5.4229e-06 deg
node 142.1733402201856 0.00011069 deg
peri 308.7563286773194 0.00011399 deg
M 113.1930777882129 2.6251e-05 deg
tp 2458400.208418400054
(2018-Oct-08.70841840)
0.00013793 TDB
period 1909.17124614562
5.23
2.2932e-05
6.278e-08
d
yr
n .1885634935717764 2.2649e-09 deg/d
Q 3.368416588288203 2.6973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      6795 days (18.60 yr)  
   first obs. used      2001-09-18  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56166  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:21:33  

Additional Information
 Earth MOID = 1.67308 au 
 Jupiter MOID = 1.80979 au 
 T_jup = 3.237 
[ 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 15.7   n/a MPO436859  

172805 (2004 FQ156)          Discovered 2004-Mar-17 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2004 FQ156 = 2001 SK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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