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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2753723377884954 5.0642e-08  
a 2.352895455101611 9.8495e-09 au
q 1.704973133058355 1.2212e-07 au
i 12.33285472150032 5.0294e-06 deg
node 354.6612628213835 2.004e-05 deg
peri 342.681669653851 2.0936e-05 deg
M 267.6847192141838 7.6079e-06 deg
tp 2459338.544183201072
(2021-May-04.04418320)
2.9006e-05 TDB
period 1318.263941965758
3.61
8.2776e-06
2.266e-08
d
yr
n .273086434772067 1.7148e-09 deg/d
Q 3.000817777144867 1.2562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      7537 days (20.64 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:25:51  

Additional Information
 Earth MOID = .700705 au 
 Jupiter MOID = 2.41297 au 
 T_jup = 3.475 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457195.5 (2015-Jun-22.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2748341784054252 5.081e-08  
q 1.707370880259319 1.225e-07 au
tp 2456698.796615105659
(2014-Feb-10.29661511)
2.3932e-05 TDB
node 354.6967303041866 2.0055e-05 deg
peri 342.3259236954672 2.0949e-05 deg
i 12.32725441191269 5.0297e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      7537 days (20.64 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:25:51  

Additional Information
 Jupiter MOID = 2.41297 au 
 T_jup = 3.475 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.581659676384487E-15 -6.215052103358135E-15 -3.124517647354151E-13 -2.753600337015081E-14 -7.981998584451977E-14 -5.9316875817703E-15
q -6.215052103358135E-15 1.500580001424198E-14 7.385117527231629E-13 6.686095498210368E-14 1.940457456284499E-13 1.442691506212958E-14
tp -3.124517647354151E-13 7.385117527231629E-13 5.727422365716587E-10 5.359779864070335E-12 1.608600633653384E-10 2.121559318694843E-13
node -2.753600337015081E-14 6.686095498210368E-14 5.359779864070335E-12 4.022172507867085E-10 -3.908364072931651E-10 -3.184573017890902E-11
peri -7.981998584451977E-14 1.940457456284499E-13 1.608600633653384E-10 -3.908364072931651E-10 4.388477031528516E-10 3.140210163444388E-11
i -5.9316875817703E-15 1.442691506212958E-14 2.121559318694843E-13 -3.184573017890902E-11 3.140210163444388E-11 2.52977619535785E-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-August); 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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