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49477 (1999 BA8)
Classification: Main-belt Asteroid          SPK-ID: 2049477
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1480749914006806 2.7064e-08  
a 2.445770512599473 7.5452e-09 au
q 2.083613064978267 6.8005e-08 au
i 1.78268470038958 3.0089e-06 deg
node 227.7692619663318 0.00011279 deg
peri 208.3418770833503 0.00011344 deg
M 252.3940884075628 1.3325e-05 deg
tp 2459418.095311517886
(2021-Jul-22.59531152)
5.2384e-05 TDB
period 1397.082278488916
3.83
6.465e-06
1.77e-08
d
yr
n .2576798843868923 1.1924e-09 deg/d
Q 2.807927960220678 8.6625e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1462  
   data-arc span      24782 days (67.85 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50886  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:28:05  

Additional Information
 Earth MOID = 1.09902 au 
 Jupiter MOID = 2.43491 au 
 T_jup = 3.483 
[ 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 15.0   n/a MPO290804  
diameter diameter 2.946 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 26.266 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.245   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49477 (1999 BA8)          Discovered 1999-Jan-21 by Korlevic, K. at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 BA8 = 1978 RF12 = 1986 VT9 = 2001 QL19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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