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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2982075664158574 3.7483e-08  
a 2.380109194222544 8.5875e-09 au
q 1.670342623609432 8.9861e-08 au
i 4.523536442596948 3.9758e-06 deg
node 26.27773703415555 4.6524e-05 deg
peri 296.7552322508201 4.692e-05 deg
M 232.1720851599243 5.3572e-06 deg
tp 2459676.730223202964
(2022-Apr-07.23022320)
2.0939e-05 TDB
period 1341.200633426255
3.67
7.2586e-06
1.987e-08
d
yr
n .2684162168044444 1.4527e-09 deg/d
Q 3.089875764835656 1.1148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1348  
   data-arc span      9536 days (26.11 yr)  
   first obs. used      1995-03-23  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:03:53  

Additional Information
 Earth MOID = .662579 au 
 Jupiter MOID = 2.26868 au 
 T_jup = 3.473 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457613.5 (2016-Aug-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2991260883818505 3.7549e-08  
q 1.667712096040393 9.0012e-08 au
tp 2456993.612736444062
(2014-Dec-02.11273644)
1.9425e-05 TDB
node 26.30806942096114 4.6526e-05 deg
peri 296.6651373137616 4.6919e-05 deg
i 4.525535150379405 3.9769e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1348  
   data-arc span      9536 days (26.11 yr)  
   first obs. used      1995-03-23  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:03:53  

Additional Information
 Jupiter MOID = 2.26868 au 
 T_jup = 3.473 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.409894564823918E-15 -3.372381365812002E-15 2.453455994528857E-13 -2.25550693916319E-14 1.18820763745879E-13 -3.847599151080339E-15
q -3.372381365812002E-15 8.102094498013175E-15 -6.152467191727738E-13 5.449062041499186E-14 -2.868235480603998E-13 9.177114735964048E-15
tp 2.453455994528857E-13 -6.152467191727738E-13 3.773207596973374E-10 -8.521576873039046E-12 1.259087572574041E-10 -1.032559269876706E-12
node -2.25550693916319E-14 5.449062041499186E-14 -8.521576873039046E-12 2.164671265364041E-9 -2.160413351047536E-9 -5.419536565218401E-11
peri 1.18820763745879E-13 -2.868235480603998E-13 1.259087572574041E-10 -2.160413351047536E-9 2.201435758997116E-9 5.369063357797184E-11
i -3.847599151080339E-15 9.177114735964048E-15 -1.032559269876706E-12 -5.419536565218401E-11 5.369063357797184E-11 1.581538128053443E-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 15.99   n/a MPCxxxxx  
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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