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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06159940850503305 1.9641e-08  
a 2.684632400955523 8.7518e-09 au
q 2.519260633003216 5.2972e-08 au
i 5.978287886257863 7.3471e-07 deg
node 160.5747834572457 4.7846e-06 deg
peri 206.5894571042257 2.0559e-05 deg
M 8.142385620702926 1.8351e-05 deg
tp 2459164.160844212622
(2020-Nov-10.66084421)		 8.1921e-05 TDB
period 1606.666239215367
4.40		 7.8565e-06
2.151e-08		 d
yr
n .2240664496540426 1.0957e-09 deg/d
Q 2.85000416890783 9.2909e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      16213 days (44.39 yr)  
   first obs. used      1976-09-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .448  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:04  

Additional Information
 Earth MOID = 1.51679 au 
 Jupiter MOID = 2.43643 au 
 T_jup = 3.364 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457578.5 (2016-Jul-09.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06397009519208517 1.9714e-08  
q 2.513643662036236 5.3365e-08 au
tp 2457557.243423963825
(2016-Jun-17.74342396)		 7.979e-05 TDB
node 160.7070025763274 4.7863e-06 deg
peri 206.6419179497526 1.9798e-05 deg
i 5.975524723562664 7.3481e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      16213 days (44.39 yr)  
   first obs. used      1976-09-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .448  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:04  

Additional Information
 Jupiter MOID = 2.43643 au 
 T_jup = 3.364 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.886433690719904E-16 -1.039585732486972E-15 3.873487935213364E-14 6.061101060597985E-15 3.989607432007473E-14 2.417903857863431E-15
q -1.039585732486972E-15 2.847860467312938E-15 -2.449651636638555E-13 -1.502762457193982E-14 -1.426153271983863E-13 -6.484989654524627E-15
tp 3.873487935213364E-14 -2.449651636638555E-13 6.366473719669798E-9 -7.735497885267335E-11 1.529128695329278E-9 8.234638271401664E-12
node 6.061101060597985E-15 -1.502762457193982E-14 -7.735497885267335E-11 2.290821754937594E-11 -3.968425545685959E-11 1.446351001787823E-12
peri 3.989607432007473E-14 -1.426153271983863E-13 1.529128695329278E-9 -3.968425545685959E-11 3.919710911899605E-10 6.272156094741718E-13
i 2.417903857863431E-15 -6.484989654524627E-15 8.234638271401664E-12 1.446351001787823E-12 6.272156094741718E-13 5.399494338757323E-13

[ 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 13.27   n/a E2021B10  
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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