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 ]  
379962 (2012 QZ21)
Classification: Main-belt Asteroid          SPK-ID: 2379962
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782958194883573 5.1827e-08  
a 3.098265318316385 4.8357e-08 au
q 2.545857564394809 1.629e-07 au
i 4.742493915754644 5.898e-06 deg
node 292.5959106130603 9.3064e-05 deg
peri 309.5150830926381 9.5923e-05 deg
M 166.7352957228977 2.2653e-05 deg
tp 2457677.925644229920
(2016-Oct-16.42564423)
0.00012078 TDB
period 1991.940378533888
5.45
4.6635e-05
1.277e-07
d
yr
n .1807283008465182 4.2311e-09 deg/d
Q 3.650673072237961 5.6979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      5049 days (13.82 yr)  
   first obs. used      2005-03-08  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57874  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:44:52  

Additional Information
 Earth MOID = 1.53618 au 
 Jupiter MOID = 1.41852 au 
 T_jup = 3.193 
[ 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 15.7   n/a MPO418934  
diameter diameter 2.862 km 0.989 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

379962 (2012 QZ21)          Discovered 2005-Mar-08 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2012 QZ21 = 2005 ES173 = 2010 HT91 = 2011 KW34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-06 03:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin