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120563 (1995 FY4)
Classification: Main-belt Asteroid          SPK-ID: 2120563
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2980700380939867 4.0693e-08  
a 2.380434850576294 9.2582e-09 au
q 1.670898543984765 9.6548e-08 au
i 4.523022010739796 3.9796e-06 deg
node 26.28546744209433 5.5584e-05 deg
peri 296.7244498255504 5.5981e-05 deg
M 178.5280947332735 5.3389e-06 deg
tp 2458335.246840047598
(2018-Aug-04.74684005)		 1.9537e-05 TDB
period 1341.475905742858
3.67		 7.8261e-06
2.143e-08		 d
yr
n .2683611375044755 1.5656e-09 deg/d
Q 3.089971157167824 1.2018e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      9077 days (24.85 yr)  
   first obs. used      1995-03-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40024  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:20:35  

Additional Information
 Earth MOID = .665061 au 
 Jupiter MOID = 2.26836 au 
 T_jup = 3.473 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457161.5 (2015-May-19.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2994606989117023 4.0793e-08  
q 1.666719664051266 9.6865e-08 au
tp 2456993.826962200335
(2014-Dec-02.32696220)		 2.0771e-05 TDB
node 26.31238717874026 5.559e-05 deg
peri 296.6638485580868 5.598e-05 deg
i 4.525526632156678 3.9813e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      9077 days (24.85 yr)  
   first obs. used      1995-03-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40024  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:20:35  

Additional Information
 Jupiter MOID = 2.26836 au 
 T_jup = 3.473 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664084981650448E-15 -3.94269161107965E-15 1.291726532452393E-13 -4.651589450038814E-14 9.120653646009661E-14 -4.52908345883607E-15
q -3.94269161107965E-15 9.382741593248631E-15 -3.587212012224627E-13 1.11036667894687E-13 -2.294353971373298E-13 1.071754157306711E-14
tp 1.291726532452393E-13 -3.587212012224627E-13 4.314172596189873E-10 -1.2665739439996E-11 1.53931048332227E-10 -6.806760318427513E-13
node -4.651589450038814E-14 1.11036667894687E-13 -1.2665739439996E-11 3.090262488209918E-9 -3.084131952599658E-9 -5.871092239045427E-11
peri 9.120653646009661E-14 -2.294353971373298E-13 1.53931048332227E-10 -3.084131952599658E-9 3.133765143988396E-9 5.834624439737334E-11
i -4.52908345883607E-15 1.071754157306711E-14 -6.806760318427513E-13 -5.871092239045427E-11 5.834624439737334E-11 1.58508410092659E-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 16.0   n/a MPO469250  
rotation period rot_per 2.48026 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

120563 (1995 FY4)          Discovered 1995-Mar-23 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1995 FY4 = 1999 GP59 = 2000 WF79 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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