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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
212958 (2009 BW61)
Classification: Main-belt Asteroid          SPK-ID: 2212958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137876857892335 6.0779e-08  
a 3.079198887583482 4.0389e-08 au
q 2.654648620137899 1.9073e-07 au
i 1.617473904805301 9.1331e-06 deg
node 156.3927869310125 0.00024702 deg
peri 145.9584443723475 0.00024939 deg
M 163.8884826133954 3.5602e-05 deg
tp 2457702.035396239188
(2016-Nov-09.53539624)
0.00018953 TDB
period 1973.58137799645
5.40
3.883e-05
1.063e-07
d
yr
n .1824095038662488 3.5889e-09 deg/d
Q 3.503749155029066 4.5958e-08 au
  Orbit Determination Parameters
   # obs. used (total)      175  
   data-arc span      8064 days (22.08 yr)  
   first obs. used      1995-09-26  
   last obs. used      2017-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64314  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 08:31:12  

Additional Information
 Earth MOID = 1.6387 au 
 Jupiter MOID = 1.71798 au 
 T_jup = 3.213 
[ 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 16.1   n/a MPO422828  
diameter diameter 2.976 km 1.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212958 (2009 BW61)          Discovered 2009-Jan-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin