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187780 (1998 SC109)
Classification: Main-belt Asteroid          SPK-ID: 2187780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .26367077675844 5.2268e-08  
a 2.336053971793758 1.2138e-08 au
q 1.720104806501259 1.1884e-07 au
i 5.11892320009283 5.9157e-06 deg
node 218.3080162208392 6.9103e-05 deg
peri 136.9844619615311 7.0398e-05 deg
M 89.87804680042889 1.7101e-05 deg
tp 2458874.907898652508
(2020-Jan-26.40789865)
6.012e-05 TDB
period 1304.135555430625
3.57
1.0164e-05
2.783e-08
d
yr
n .2760449237818137 2.1514e-09 deg/d
Q 2.952003137086257 1.5338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      10671 days (29.22 yr)  
   first obs. used      1991-11-29  
   last obs. used      2021-02-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:48  

Additional Information
 Earth MOID = .71866 au 
 Jupiter MOID = 2.51844 au 
 T_jup = 3.515 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457420.5 (2016-Feb-02.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2648921741327491 5.2316e-08  
q 1.716497710832548 1.1902e-07 au
tp 2457571.600381072229
(2016-Jul-02.10038107)
5.306e-05 TDB
node 218.3337268671788 6.9059e-05 deg
peri 137.0451596644892 7.0341e-05 deg
i 5.121394752872131 5.9192e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      10671 days (29.22 yr)  
   first obs. used      1991-11-29  
   last obs. used      2021-02-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:48  

Additional Information
 Jupiter MOID = 2.51844 au 
 T_jup = 3.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.736923089067261E-15 -6.212311050219108E-15 6.94869389916503E-13 7.052778362139506E-15 8.789319556411814E-14 5.54722223050458E-16
q -6.212311050219108E-15 1.416672177345013E-14 -1.340272440711215E-12 -1.311053785448299E-14 -1.449626960534098E-13 -9.651860346378937E-16
tp 6.94869389916503E-13 -1.340272440711215E-12 2.815411638979077E-9 9.493694382566052E-12 7.40255584944634E-10 1.398326145365058E-12
node 7.052778362139506E-15 -1.311053785448299E-14 9.493694382566052E-12 4.769194758416916E-9 -4.746771866863829E-9 5.122323230055976E-11
peri 8.789319556411814E-14 -1.449626960534098E-13 7.40255584944634E-10 -4.746771866863829E-9 4.947834926114703E-9 -5.062924608382506E-11
i 5.54722223050458E-16 -9.651860346378937E-16 1.398326145365058E-12 5.122323230055976E-11 -5.062924608382506E-11 3.503688405373942E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.27   n/a MPCxxxxx  
diameter diameter 2.403 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187780 (1998 SC109)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1998 SC109 = 2005 ND19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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