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6391 Africano (1990 BN2)
Classification: Main-belt Asteroid          SPK-ID: 2006391
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133312073737835 4.0616e-08  
a 2.644897826002906 1.1186e-08 au
q 2.292301011993767 1.0931e-07 au
i 14.25596785592461 4.0739e-06 deg
node 89.56962064445206 1.9034e-05 deg
peri 18.57354081874541 2.7839e-05 deg
M 33.59229328209535 1.782e-05 deg
tp 2458853.894950514295
(2020-Jan-05.39495051)
7.7977e-05 TDB
period 1571.128751813565
4.30
9.9675e-06
2.729e-08
d
yr
n .2291346266717158 1.4537e-09 deg/d
Q 2.997494640012045 1.2678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2425  
   data-arc span      23952 days (65.58 yr)  
   first obs. used      1954-11-24  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:36:04  

Additional Information
 Earth MOID = 1.31309 au 
 Jupiter MOID = 2.18227 au 
 T_jup = 3.337 
[ show covariance matrix ]

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 MPO452257  
diameter diameter 5.880 km 0.961 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.268   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6391 Africano (1990 BN2)          Discovered 1990-Jan-21 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1990 BN2 = 1977 AF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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