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90820 McCann (1995 SS1)
Classification: Main-belt Asteroid          SPK-ID: 2090820
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205985354745349 6.0702e-08  
a 2.671178907267558 2.0697e-08 au
q 2.349038643060622 1.6259e-07 au
i 9.456596272051415 6.4931e-06 deg
node 313.2501221480011 3.6748e-05 deg
peri 53.8878442785946 4.4279e-05 deg
M 222.1150672962337 2.5691e-05 deg
tp 2459611.255241294811
(2022-Jan-31.75524129)
0.00011624 TDB
period 1594.604156920519
4.37
1.8533e-05
5.074e-08
d
yr
n .2257613580383659 2.6239e-09 deg/d
Q 2.993319171474494 2.3193e-08 au
  Orbit Determination Parameters
   # obs. used (total)      270  
   data-arc span      8983 days (24.59 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:08  

Additional Information
 Earth MOID = 1.36036 au 
 Jupiter MOID = 2.48531 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457022.5 (2014-Dec-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188616366835398 6.0467e-08  
q 2.356240948396705 1.6171e-07 au
tp 2456422.043575336317
(2013-May-09.54357534)
0.00011063 TDB
node 313.2794221610652 3.6717e-05 deg
peri 54.271082768874 4.4507e-05 deg
i 9.4574269515374 6.493e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      270  
   data-arc span      8983 days (24.59 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:08  

Additional Information
 Jupiter MOID = 2.48531 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.656224859415172E-15 -9.715049944299715E-15 -1.251320700798708E-13 1.9302405859308E-14 -1.410323832902142E-13 -8.163917862599678E-15
q -9.715049944299715E-15 2.615135975943365E-14 3.818187909644903E-13 -5.179425364149755E-14 4.096545723683007E-13 2.230515554347429E-14
tp -1.251320700798708E-13 3.818187909644903E-13 1.223868684652453E-8 -7.318278132424882E-12 2.809035668640039E-9 -5.925800990955086E-12
node 1.9302405859308E-14 -5.179425364149755E-14 -7.318278132424882E-12 1.348156077125866E-9 -1.331874389026979E-9 1.075320557934618E-11
peri -1.410323832902142E-13 4.096545723683007E-13 2.809035668640039E-9 -1.331874389026979E-9 1.980909160544562E-9 -1.174925590562117E-11
i -8.163917862599678E-15 2.230515554347429E-14 -5.925800990955086E-12 1.075320557934618E-11 -1.174925590562117E-11 4.215861838522555E-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 15.9   n/a MPO468892  

90820 McCann           Discovered 1995 Sept. 20 by AMOS at Haleakala.
Jeff McCann (b. 1962) was the AMOS Commander during the early years of the twenty-first century. He ensured that funding and support was always available for the NEAT program, and he was an inspiration to all who worked with him.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

Alternate Designations
 1995 SS1 = 2000 XN52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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