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20191 (1997 BS3)
Classification: Main-belt Asteroid          SPK-ID: 2020191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306717931134545 2.614e-08  
a 2.574384943989654 1.0015e-08 au
q 2.237985447194246 7.0082e-08 au
i 8.098268021301235 2.8848e-06 deg
node 123.1458366518306 2.6164e-05 deg
peri 15.63335872379105 3.0364e-05 deg
M 284.5769104608703 1.7101e-05 deg
tp 2459516.589794919535
(2021-Oct-29.08979492)
7.2468e-05 TDB
period 1508.72003343216
4.13
8.8041e-06
2.41e-08
d
yr
n .2386128585971265 1.3924e-09 deg/d
Q 2.910784440785062 1.1324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1629  
   data-arc span      24182 days (66.21 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:49  

Additional Information
 Earth MOID = 1.25273 au 
 Jupiter MOID = 2.11883 au 
 T_jup = 3.402 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.34   n/a E2021B10  
diameter diameter 4.010 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.209   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20191 (1997 BS3)          Discovered 1997-Jan-31 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 BS3 = 1989 GZ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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