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JPL Small-Body Database Browser
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173273 (1999 SZ4)
Classification: Main-belt Asteroid          SPK-ID: 2173273
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750956576968024 5.7653e-08  
a 2.353231163911765 9.9042e-09 au
q 1.705867489162846 1.3808e-07 au
i 12.33082009569944 5.645e-06 deg
node 354.6623341214113 2.2956e-05 deg
peri 342.6910810873413 2.3896e-05 deg
M 158.4287266447484 7.7684e-06 deg
tp 2458020.234507615331
(2017-Sep-23.73450762)
2.7203e-05 TDB
period 1318.546084933804
3.61
8.3242e-06
2.279e-08
d
yr
n .2730279996380054 1.7237e-09 deg/d
Q 3.000594838660684 1.2629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      579  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50768  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:00:53  

Additional Information
 Earth MOID = .700688 au 
 Jupiter MOID = 2.40968 au 
 T_jup = 3.474 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456952.5 (2014-Oct-22.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750905098616904 5.8022e-08  
q 1.705851971700161 1.3904e-07 au
tp 2456698.660025219752
(2014-Feb-10.16002522)
2.595e-05 TDB
node 354.715502926888 2.2985e-05 deg
peri 342.195627600502 2.3912e-05 deg
i 12.32519208147611 5.6474e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      579  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50768  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:00:53  

Additional Information
 Jupiter MOID = 2.40968 au 
 T_jup = 3.474 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.366530453684956E-15 -8.057730900613078E-15 -5.663253817577372E-13 -3.467190103904667E-14 -1.836635161585864E-13 -6.819746510163923E-15
q -8.057730900613078E-15 1.933210020554989E-14 1.334125065156424E-12 8.442971256585345E-14 4.365046122020695E-13 1.650393977384676E-14
tp -5.663253817577372E-13 1.334125065156424E-12 6.733952944708433E-10 1.1568822278019E-11 1.956824403310954E-10 -8.292256602032581E-14
node -3.467190103904667E-14 8.442971256585345E-14 1.1568822278019E-11 5.282889327365553E-10 -5.117235067157923E-10 -5.841556717758075E-11
peri -1.836635161585864E-13 4.365046122020695E-13 1.956824403310954E-10 -5.117235067157923E-10 5.717849782833809E-10 5.733454446972379E-11
i -6.819746510163923E-15 1.650393977384676E-14 -8.292256602032581E-14 -5.841556717758075E-11 5.733454446972379E-11 3.189264091719777E-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 15.8   n/a MPO264384  
diameter diameter 3.460 km 0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.523 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.080   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173273 (1999 SZ4)          Discovered 1999-Sep-29 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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