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173274 (1999 SS7)
Classification: Mars-crossing Asteroid          SPK-ID: 2173274
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3151843093255846 3.578e-08  
a 2.263722219640194 8.6886e-09 au
q 1.55023249533792 8.2989e-08 au
i 7.054570633560879 3.9686e-06 deg
node 41.46395571908663 3.4679e-05 deg
peri 253.3977699114501 3.519e-05 deg
M 54.26058963135797 6.2944e-06 deg
tp 2458812.994014606034
(2019-Nov-25.49401461)
2.1441e-05 TDB
period 1244.036513433263
3.41
7.1623e-06
1.961e-08
d
yr
n .2893805737312971 1.6661e-09 deg/d
Q 2.977211943942467 1.1427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      7717 days (21.13 yr)  
   first obs. used      1999-09-11  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:23:13  

Additional Information
 Earth MOID = .553993 au 
 Jupiter MOID = 2.28299 au 
 T_jup = 3.541 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457171.5 (2015-May-29.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3147555611986385 3.5777e-08  
q 1.552299709839512 8.2958e-08 au
tp 2457568.773287223466
(2016-Jun-29.27328722)
2.0839e-05 TDB
node 41.50425772182331 3.4683e-05 deg
peri 253.3300094770393 3.5194e-05 deg
i 7.052726439089038 3.967e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      7717 days (21.13 yr)  
   first obs. used      1999-09-11  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:23:13  

Additional Information
 Jupiter MOID = 2.28299 au 
 T_jup = 3.541 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.280006232944771E-15 -2.96097834987856E-15 2.701595713060142E-13 8.083714817998476E-15 9.897082179581101E-14 -7.121404553161128E-15
q -2.96097834987856E-15 6.882041242898786E-15 -6.203050858498081E-13 -1.716820681438491E-14 -2.342279735612096E-13 1.635921416210506E-14
tp 2.701595713060142E-13 -6.203050858498081E-13 4.34271751040846E-10 6.733749081190564E-12 1.385117099452559E-10 -3.374857069990987E-12
node 8.083714817998476E-15 -1.716820681438491E-14 6.733749081190564E-12 1.202921299891879E-9 -1.191778122507253E-9 -3.635442407610921E-11
peri 9.897082179581101E-14 -2.342279735612096E-13 1.385117099452559E-10 -1.191778122507253E-9 1.238600019632027E-9 3.493220742009572E-11
i -7.121404553161128E-15 1.635921416210506E-14 -3.374857069990987E-12 -3.635442407610921E-11 3.493220742009572E-11 1.573708223332186E-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 16.0   n/a MPO436860  

173274 (1999 SS7)          Discovered 1999-Sep-29 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 SS7 = 2002 GT10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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