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6891 Triconia (1976 SA)
Classification: Main-belt Asteroid          SPK-ID: 2006891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06185758882909412 3.7143e-08  
a 2.685492362842617 9.1778e-09 au
q 2.519374280458226 1.0148e-07 au
i 5.977429565119404 3.8075e-06 deg
node 160.5742562744879 2.8582e-05 deg
peri 206.4091869972178 3.7042e-05 deg
M 323.5079141867341 2.271e-05 deg
tp 2459163.441044533026
(2020-Nov-09.94104453)
0.00010132 TDB
period 1607.438290374872
4.40
8.2403e-06
2.256e-08
d
yr
n .2239588307405843 1.1481e-09 deg/d
Q 2.851610445227009 9.7456e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2351  
   data-arc span      16125 days (44.15 yr)  
   first obs. used      1976-09-23  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:28:47  

Additional Information
 Earth MOID = 1.51847 au 
 Jupiter MOID = 2.43735 au 
 T_jup = 3.364 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457473.5 (2016-Mar-26.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06398683754311042 3.7233e-08  
q 2.513629858980434 1.0207e-07 au
tp 2457557.396047660484
(2016-Jun-17.89604766)
9.8514e-05 TDB
node 160.7070575423084 2.8603e-05 deg
peri 206.680856106618 3.65e-05 deg
i 5.97554924329728 3.8081e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2351  
   data-arc span      16125 days (44.15 yr)  
   first obs. used      1976-09-23  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:28:47  

Additional Information
 Jupiter MOID = 2.43735 au 
 T_jup = 3.364 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.386285313536894E-15 -3.787577864100984E-15 1.118564541453703E-13 7.153274427934112E-15 3.615869188638865E-14 1.937601395299579E-16
q -3.787577864100984E-15 1.041913585350951E-14 -4.545873502307129E-13 -1.92018758169887E-14 -1.33416916698182E-13 -3.024114252836704E-16
tp 1.118564541453703E-13 -4.545873502307129E-13 9.704985574439039E-9 -1.757595869705542E-12 2.242767310820758E-9 1.533312582965048E-12
node 7.153274427934112E-15 -1.92018758169887E-14 -1.757595869705542E-12 8.181064693920012E-10 -8.136451747038165E-10 2.99261287628871E-11
peri 3.615869188638865E-14 -1.33416916698182E-13 2.242767310820758E-9 -8.136451747038165E-10 1.332278389404135E-9 -2.941519723218135E-11
i 1.937601395299579E-16 -3.024114252836704E-16 1.533312582965048E-12 2.99261287628871E-11 -2.941519723218135E-11 1.450157533118415E-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 13.2   n/a MPO400067  
diameter diameter 8.321 km 0.239 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.161   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6891 Triconia (1976 SA)          Discovered 1976-Sep-23 by Harvard Observatory at Harvard
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1976 SA = 1981 WC8 = 1983 HH1 = 1989 RK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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