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100255 (1994 SJ5)
Classification: Main-belt Asteroid          SPK-ID: 2100255
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138803595195918 4.5168e-08  
a 2.575910945534401 1.5461e-08 au
q 2.21836524538971 1.1967e-07 au
i 11.64245371202101 4.5405e-06 deg
node 11.20647239291552 2.7832e-05 deg
peri 220.9795790750238 3.6332e-05 deg
M 246.4939866923971 2.8235e-05 deg
tp 2459676.614121720671
(2022-Apr-07.11412172)		 0.00012072 TDB
period 1510.061703558755
4.13		 1.3595e-05
3.722e-08		 d
yr
n .2384008541846932 2.1464e-09 deg/d
Q 2.933456645679093 1.7607e-08 au
   Orbit Determination Parameters
   # obs. used (total)      410  
   data-arc span      11079 days (30.33 yr)  
   first obs. used      1990-10-18  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53067  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:20  

Additional Information
 Earth MOID = 1.22198 au 
 Jupiter MOID = 2.09026 au 
 T_jup = 3.385 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457678.5 (2016-Oct-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1395004214430415 4.5146e-08  
q 2.215418531801466 1.1958e-07 au
tp 2458167.941373914316
(2018-Feb-18.44137391)		 0.00011339 TDB
node 11.23478665555108 2.7811e-05 deg
peri 221.2396639049067 3.6242e-05 deg
i 11.64965998922232 4.5429e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      410  
   data-arc span      11079 days (30.33 yr)  
   first obs. used      1990-10-18  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53067  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:20  

Additional Information
 Jupiter MOID = 2.09026 au 
 T_jup = 3.385 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.038171222520569E-15 -5.366778979686103E-15 4.392506953552963E-14 -1.22687283243415E-14 7.460587090777302E-14 1.482007430098632E-15
q -5.366778979686103E-15 1.43002221069518E-14 5.679197083490291E-13 3.103291498667782E-14 -6.545011253306678E-14 -2.346903951289694E-15
tp 4.392506953552963E-14 5.679197083490291E-13 1.285639263639085E-8 5.740181288536715E-11 2.673616294988886E-9 1.527887898116466E-11
node -1.22687283243415E-14 3.103291498667782E-14 5.740181288536715E-11 7.734446335552443E-10 -7.452722531441628E-10 -1.182247443735175E-12
peri 7.460587090777302E-14 -6.545011253306678E-14 2.673616294988886E-9 -7.452722531441628E-10 1.313503550738349E-9 4.397531940039695E-12
i 1.482007430098632E-15 -2.346903951289694E-15 1.527887898116466E-11 -1.182247443735175E-12 4.397531940039695E-12 2.063821194107937E-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 MPO453457  
diameter diameter 3.215 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100255 (1994 SJ5)          Discovered 1994-Sep-28 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1994 SJ5 = 2001 FE122 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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