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275565 (1999 SZ9)
Classification: Main-belt Asteroid          SPK-ID: 2275565
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2041498952111933 6.3959e-08  
a 2.613030641181004 1.8964e-08 au
q 2.079580709600265 1.7679e-07 au
i 11.43990408750503 4.8443e-06 deg
node 196.3319769410018 2.2533e-05 deg
peri 150.0145504960748 2.5986e-05 deg
M 320.5349757173329 9.7359e-06 deg
tp 2459169.631715565611
(2020-Nov-16.13171557)
4.1629e-05 TDB
period 1542.819717213794
4.22
1.6796e-05
4.598e-08
d
yr
n .2333389935216349 2.5402e-09 deg/d
Q 3.146480572761743 2.2836e-08 au
  Orbit Determination Parameters
   # obs. used (total)      354  
   data-arc span      9158 days (25.07 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57537  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:30:40  

Additional Information
 Earth MOID = 1.08217 au 
 Jupiter MOID = 2.3402 au 
 T_jup = 3.351 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO437256  

275565 (1999 SZ9)          Discovered 1999-Sep-27 by Sarounova, L. at Ondrejov
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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