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 ]  
34680 (2001 BR21)
Classification: Main-belt Asteroid          SPK-ID: 2034680
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .03696109553180222 4.3298e-08  
a 2.756369402848323 1.3198e-08 au
q 2.65449097002871 1.1918e-07 au
i 4.942152658217236 3.9825e-06 deg
node 92.12162510159689 5.5091e-05 deg
peri 103.7253455390918 7.8448e-05 deg
M 336.7401901386668 5.5584e-05 deg
tp 2459108.496135946424
(2020-Sep-15.99613595)
0.00025817 TDB
period 1671.492981778152
4.58
1.2005e-05
3.287e-08
d
yr
n .2153763156199603 1.5469e-09 deg/d
Q 2.858247835667937 1.3686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1281  
   data-arc span      9862 days (27.00 yr)  
   first obs. used      1993-04-20  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 07:51:00  

Additional Information
 Earth MOID = 1.65707 au 
 Jupiter MOID = 2.10934 au 
 T_jup = 3.337 
[ 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 14.8   n/a MPO365661  
diameter diameter 5.823 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

34680 (2001 BR21)          Discovered 2001-Jan-20 by LINEAR at Socorro
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 BR21 = 1993 HN7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-05 20:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin