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74427 (1999 BU2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2074427
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04700752566344159 4.4814e-08  
a 1.908680322775566 6.373e-09 au
q 1.818957983519387 8.7315e-08 au
i 23.98625388947503 5.3186e-06 deg
node 121.0300902846257 9.1101e-06 deg
peri 21.25033242745388 6.5409e-05 deg
M 30.00570536733271 6.0434e-05 deg
tp 2458920.221442352758
(2020-Mar-11.72144235)
0.00016184 TDB
period 963.159519138349
2.64
4.8239e-06
1.321e-08
d
yr
n .3737698614265467 1.872e-09 deg/d
Q 1.998402662031744 6.6726e-09 au
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      7804 days (21.37 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50027  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:05:09  

Additional Information
 Earth MOID = .839031 au 
 Jupiter MOID = 3.0707 au 
 T_jup = 3.832 
[ 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 15.6   n/a MPO319937  

74427 (1999 BU2)          Discovered 1999-Jan-18 by Kobayashi, T. at Oizumi
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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