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155395 (1995 SA5)
Classification: Main-belt Asteroid          SPK-ID: 2155395
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331656239743669 4.2539e-08  
a 2.851986305884637 1.9205e-08 au
q 2.47219976989516 1.1616e-07 au
i 14.90397184400834 6.5067e-06 deg
node 191.5800084877449 1.681e-05 deg
peri 228.5715539787541 3.4276e-05 deg
M 91.61832166954775 2.6723e-05 deg
tp 2458948.787302293516
(2020-Apr-09.28730229)
0.00013145 TDB
period 1759.217678704832
4.82
1.7769e-05
4.865e-08
d
yr
n .2046364155827712 2.067e-09 deg/d
Q 3.231772841874114 2.1762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      485  
   data-arc span      9364 days (25.64 yr)  
   first obs. used      1995-09-18  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 01:53:21  

Additional Information
 Earth MOID = 1.50745 au 
 Jupiter MOID = 2.26572 au 
 T_jup = 3.243 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457954.5 (2017-Jul-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1311134496499944 4.234e-08  
q 2.480246625974288 1.1491e-07 au
tp 2457187.961943348692
(2015-Jun-14.46194335)
0.00014014 TDB
node 191.6307991806851 1.6786e-05 deg
peri 228.3905819890711 3.4802e-05 deg
i 14.90883023742153 6.5094e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      485  
   data-arc span      9364 days (25.64 yr)  
   first obs. used      1995-09-18  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 01:53:21  

Additional Information
 Jupiter MOID = 2.26572 au 
 T_jup = 3.243 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.792702465661109E-15 -4.820005109919281E-15 -2.827973427775532E-12 4.290083716778253E-15 -5.964437442366518E-13 3.811217750890921E-15
q -4.820005109919281E-15 1.320543513630586E-14 7.150549604658327E-12 -1.12765648246125E-14 1.525867129658569E-12 -1.038352079562161E-14
tp -2.827973427775532E-12 7.150549604658327E-12 1.96399379807632E-8 -3.750286849723411E-11 4.283575374238165E-9 -3.048073246396202E-11
node 4.290083716778253E-15 -1.12765648246125E-14 -3.750286849723411E-11 2.817709014844562E-10 -2.801381856777951E-10 -3.038367044408604E-11
peri -5.964437442366518E-13 1.525867129658569E-12 4.283575374238165E-9 -2.801381856777951E-10 1.21116586603975E-9 2.280679213935084E-11
i 3.811217750890921E-15 -1.038352079562161E-14 -3.048073246396202E-11 -3.038367044408604E-11 2.280679213935084E-11 4.237264153237016E-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 15.62   n/a MPCxxxxx  

155395 (1995 SA5)          Discovered 1995-Sep-25 by Sarounova, L. at Ondrejov
Reference: 20070502/Numbers.arcLast Updated: 2007-05-02

Alternate Designations
 1995 SA5 = 2005 XV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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