Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
20189 (1997 BS2)
Classification: Main-belt Asteroid          SPK-ID: 2020189
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17281884298742 4.041e-08  
a 2.606931540543972 1.2595e-08 au
q 2.156404647959751 1.042e-07 au
i 3.396648478489889 5.8854e-06 deg
node 358.0678983297198 6.7845e-05 deg
peri 97.80057249962049 7.0529e-05 deg
M 271.359834065961 2.0359e-05 deg
tp 2459579.047974065324
(2021-Dec-30.54797407)		 8.8466e-05 TDB
period 1537.421204343488
4.21		 1.1142e-05
3.051e-08		 d
yr
n .2341583418928633 1.697e-09 deg/d
Q 3.057458433128194 1.4772e-08 au
   Orbit Determination Parameters
   # obs. used (total)      862  
   data-arc span      10654 days (29.17 yr)  
   first obs. used      1991-10-09  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49636  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:48  

Additional Information
 Earth MOID = 1.17611 au 
 Jupiter MOID = 2.12223 au 
 T_jup = 3.388 
[ 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 15.09   n/a E2021B10  
diameter diameter 2.450 km 0.662 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.323   0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20189 (1997 BS2)          Discovered 1997-Jan-30 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 15:34 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin