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6917 (1993 FR2)
Classification: Main-belt Asteroid          SPK-ID: 2006917
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08116678282282939 2.986e-08  
a 2.21644072492736 5.2613e-09 au
q 2.036539361967507 6.5124e-08 au
i 3.799513307501396 3.2818e-06 deg
node 167.0399039879627 3.8406e-05 deg
peri 19.94368302183215 4.2182e-05 deg
M 92.28668435764551 1.8113e-05 deg
tp 2458691.527980759324
(2019-Jul-27.02798076)
6.0415e-05 TDB
period 1205.265176670405
3.30
4.2915e-06
1.175e-08
d
yr
n .2986894560369819 1.0635e-09 deg/d
Q 2.396342087887214 5.6884e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3100  
   data-arc span      25288 days (69.23 yr)  
   first obs. used      1951-08-06  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:32:06  

Additional Information
 Earth MOID = 1.03816 au 
 Jupiter MOID = 2.55896 au 
 T_jup = 3.646 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457100.5 (2015-Mar-19.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08132210487802981 2.9834e-08  
q 2.035209166463257 6.5055e-08 au
tp 2457486.381737782207
(2016-Apr-07.88173778)
5.9575e-05 TDB
node 167.0811881400436 3.8422e-05 deg
peri 19.79269718150527 4.2195e-05 deg
i 3.798711684192085 3.2819e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3100  
   data-arc span      25288 days (69.23 yr)  
   first obs. used      1951-08-06  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44955  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:32:06  

Additional Information
 Jupiter MOID = 2.55896 au 
 T_jup = 3.646 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.900509336299267E-16 -1.935834964616341E-15 -2.824199262391358E-13 -1.866622284956097E-15 -9.700616586739202E-14 3.347314677721282E-16
q -1.935834964616341E-15 4.232206981957237E-15 6.655280334664996E-13 3.796780668639852E-15 2.239505836844438E-13 -7.3163877106076E-16
tp -2.824199262391358E-13 6.655280334664996E-13 3.549176138306703E-9 -5.037674528786097E-12 1.043002274678124E-9 -8.481924899277463E-13
node -1.866622284956097E-15 3.796780668639852E-15 -5.037674528786097E-12 1.476280556851131E-9 -1.474118229261941E-9 -9.138186297868016E-12
peri -9.700616586739202E-14 2.239505836844438E-13 1.043002274678124E-9 -1.474118229261941E-9 1.780421754692787E-9 8.872320626126294E-12
i 3.347314677721282E-16 -7.3163877106076E-16 -8.481924899277463E-13 -9.138186297868016E-12 8.872320626126294E-12 1.077078587993722E-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 13.5   n/a MPO267735  
diameter diameter 4.396 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.205   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6917 (1993 FR2)          Discovered 1993-Mar-29 by Otomo, S. at Kiyosato
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1993 FR2 = 1983 EM2 = 1986 AX2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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