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6909 Levison (1991 BY2)
Classification: Mars-crossing Asteroid          SPK-ID: 2006909
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4671000613349323 5.9188e-08  
a 2.722447501267091 1.4571e-08 au
q 1.450792106444099 1.579e-07 au
i 38.01568760367931 1.2535e-05 deg
node 308.281906746454 9.9703e-06 deg
peri 75.54736767662459 1.875e-05 deg
M 236.5846807303219 1.4027e-05 deg
tp 2459562.976351312550
(2021-Dec-14.47635131)
6.6624e-05 TDB
period 1640.732185200188
4.49
1.3172e-05
3.606e-08
d
yr
n .2194142366726815 1.7615e-09 deg/d
Q 3.994102896090082 2.1377e-08 au
  Orbit Determination Parameters
   # obs. used (total)      648  
   data-arc span      11675 days (31.96 yr)  
   first obs. used      1987-04-18  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:15:21  

Additional Information
 Earth MOID = .713483 au 
 Jupiter MOID = 2.60818 au 
 T_jup = 2.919 
[ 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 13.8   n/a MPO435765  

6909 Levison (1991 BY2)          Discovered 1991-Jan-19 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 BY2 = 1994 OA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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