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85120 (1975 SP1)
Classification: Main-belt Asteroid          SPK-ID: 2085120
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015754599854934 5.9868e-08  
a 2.582864447206858 1.4719e-08 au
q 2.062222358180959 1.6262e-07 au
i 9.274690068811681 4.8832e-06 deg
node 196.1244623265599 3.2855e-05 deg
peri 141.7049711538618 3.6625e-05 deg
M 29.50198005192452 1.8303e-05 deg
tp 2459272.249108753344
(2021-Feb-26.74910875)
7.6422e-05 TDB
period 1516.180296036714
4.15
1.296e-05
3.548e-08
d
yr
n .237438780164231 2.0296e-09 deg/d
Q 3.103506536232759 1.7685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      469  
   data-arc span      16730 days (45.80 yr)  
   first obs. used      1975-09-30  
   last obs. used      2021-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52505  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 22:03:30  

Additional Information
 Earth MOID = 1.0623 au 
 Jupiter MOID = 2.35627 au 
 T_jup = 3.377 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.81   n/a E2021B10  

85120 (1975 SP1)          Discovered 1975-Sep-30 by Bus, S. J. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1975 SP1 = 1995 NC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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