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 ]  
109461 (2001 QR212)
Classification: Main-belt Asteroid          SPK-ID: 2109461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0784472168991697 4.1416e-08  
a 2.984043468652592 2.0455e-08 au
q 2.749953563430651 1.3069e-07 au
i 9.813310588462398 5.2321e-06 deg
node 346.9959820704603 2.4849e-05 deg
peri 312.7121175698406 4.0883e-05 deg
M 272.1367559679936 3.3292e-05 deg
tp 2459460.026834948934
(2021-Sep-02.52683495)
0.00017555 TDB
period 1882.808475878201
5.15
1.936e-05
5.3e-08
d
yr
n .1912037281604465 1.966e-09 deg/d
Q 3.218133373874532 2.206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      843  
   data-arc span      6829 days (18.70 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53611  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:05:04  

Additional Information
 Earth MOID = 1.74626 au 
 Jupiter MOID = 2.06113 au 
 T_jup = 3.232 
[ 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 14.5   n/a MPO325223  
diameter diameter 4.154 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.218   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109461 (2001 QR212)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-15 20:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin