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4808 Ballaero (1925 BA)
Classification: Main-belt Asteroid          SPK-ID: 2004808
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1614276229798277 3.3195e-08  
a 2.668635072396278 1.207e-08 au
q 2.237843656058747 9.2049e-08 au
i 10.78626732989358 4.2193e-06 deg
node 302.0603802819633 2.7096e-05 deg
peri 139.7139793122962 3.2663e-05 deg
M 341.7948648319626 1.9059e-05 deg
tp 2459081.023680692312
8.4514e-05 TDB
period 1592.326823265072
n .2260842402075591 1.5338e-09 deg/d
Q 3.09942648873381 1.4018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1943  
   data-arc span      34713 days (95.04 yr)  
   first obs. used      1925-01-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4261  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:22:35  

Additional Information
 Earth MOID = 1.26566 au 
 Jupiter MOID = 2.13371 au 
 T_jup = 3.338 
[ 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 12.2   n/a MPO337292  
diameter diameter 19.238 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.8976 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Li, B.; Zhao, H.; Han. X.L.; Annable, L.R.; et al. (2013) Minor Planet Bull. 40, 62-63.]
[Owings, L.E. (2013) Minor Planet Bull. 40, 8-10.]
geometric albedo albedo 0.074   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

4808 Ballaero           Discovered 1925 Jan. 21 by K. Reinmuth at Heidelberg.
Ball Aerospace and Technology Corporation has contributed to the scientific investigation of minor planets and comets through the development of instruments for the Hubble and Spitzer telescopes, the planned Widefield Infrared Survey Explorer and the spacecraft for the Deep Impact mission to comet 9P/Tempel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050125/MPCPages.arcLast Updated: 2005-06-01

Alternate Designations
 1925 BA = 1972 YV = 1989 VD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Aug-06 08:03 UT
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