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129498 (1995 FF4)
Classification: Main-belt Asteroid          SPK-ID: 2129498
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .10448489202807 5.5561e-08  
a 3.040532288352118 2.6624e-08 au
q 2.722842600495787 1.6249e-07 au
i 4.298230781040049 5.2808e-06 deg
node 139.6224462790056 7.6344e-05 deg
peri 185.218651209857 8.1055e-05 deg
M 124.4874801311007 2.7412e-05 deg
tp 2458330.852839427345
(2018-Jul-31.35283943)
0.00014688 TDB
period 1936.523878162496
5.30
2.5435e-05
6.964e-08
d
yr
n .1859001089837282 2.4417e-09 deg/d
Q 3.35822197620845 2.9405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      21678 days (59.35 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61149  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:04:41  

Additional Information
 Earth MOID = 1.71078 au 
 Jupiter MOID = 1.94163 au 
 T_jup = 3.228 
[ 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 15.9   n/a MPO502832  

129498 (1995 FF4)          Discovered 1995-Mar-23 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1995 FF4 = 2000 EM178 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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