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523854 (1995 SW81)
Classification: Main-belt Asteroid          SPK-ID: 2523854
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118274625465658 1.5529e-07  
a 2.393973078709988 2.1304e-08 au
q 2.110826809450696 3.7857e-07 au
i 6.181907029491214 1.774e-05 deg
node 16.55550214190148 9.7309e-05 deg
peri 295.9829986092365 0.00011651 deg
M 288.3464798270535 5.9213e-05 deg
tp 2459269.785116628688
(2021-Feb-24.28511663)
0.00022176 TDB
period 1352.936209586664
3.70
1.806e-05
4.945e-08
d
yr
n .2660879333771278 3.5519e-09 deg/d
Q 2.677119347969279 2.3824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      8503 days (23.28 yr)  
   first obs. used      1995-09-22  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54944  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 10:46:39  

Additional Information
 Earth MOID = 1.10596 au 
 Jupiter MOID = 2.5785 au 
 T_jup = 3.513 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457181.5 (2015-Jun-08.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180532685448743 1.5454e-07  
q 2.112060343926991 3.7584e-07 au
tp 2456560.706927573120
(2013-Sep-25.20692757)
0.00023237 TDB
node 16.59959661697092 9.7396e-05 deg
peri 295.4097692532853 0.00011679 deg
i 6.179056193978142 1.7732e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      8503 days (23.28 yr)  
   first obs. used      1995-09-22  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54944  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 10:46:39  

Additional Information
 Jupiter MOID = 2.5785 au 
 T_jup = 3.513 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.388248000610808E-14 -5.801776068949624E-14 2.897374977705815E-11 -1.02648616454277E-13 8.00851228705497E-12 -7.579949914929113E-14
q -5.801776068949624E-14 1.412571958438742E-13 -7.066451588019699E-11 2.569835653263822E-13 -1.949963297745508E-11 1.828117459884851E-13
tp 2.897374977705815E-11 -7.066451588019699E-11 5.399802920961903E-8 -7.984715280423236E-11 1.509264496626391E-8 -1.166135655411933E-10
node -1.02648616454277E-13 2.569835653263822E-13 -7.984715280423236E-11 9.485973158658336E-9 -9.450382972673379E-9 -1.206788976557321E-9
peri 8.00851228705497E-12 -1.949963297745508E-11 1.509264496626391E-8 -9.450382972673379E-9 1.36399786084072E-8 1.16726522139091E-9
i -7.579949914929113E-14 1.828117459884851E-13 -1.166135655411933E-10 -1.206788976557321E-9 1.16726522139091E-9 3.144149021405737E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   .36525 MPO450835 autocmod 2.6n

523854 (1995 SW81)          Discovered 1995-Sep-22 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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