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 ]  
162187 (1999 QR2)
Classification: Main-belt Asteroid          SPK-ID: 2162187
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2779992430892948 6.2026e-08  
a 2.556651876590407 1.4393e-08 au
q 1.845904590055449 1.6516e-07 au
i 18.78932628558033 4.4172e-06 deg
node 148.2752476993043 2.3317e-05 deg
peri 144.2124488755776 2.6404e-05 deg
M 103.313517265697 1.4661e-05 deg
tp 2458771.990486226037
(2019-Oct-15.49048623)
5.8313e-05 TDB
period 1493.158194991068
4.09
1.2608e-05
3.452e-08
d
yr
n .2410997047785373 2.0359e-09 deg/d
Q 3.267399163125365 1.8394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      7806 days (21.37 yr)  
   first obs. used      1999-08-31  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61137  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:08:52  

Additional Information
 Earth MOID = .856599 au 
 Jupiter MOID = 2.12374 au 
 T_jup = 3.310 
[ 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 16.70   n/a MPCxxxxx  

162187 (1999 QR2)          Discovered 1999-Aug-31 by Sarounova, L. at Ondrejov
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

Alternate Designations
 1999 QR2 = 2003 QB6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-19 06:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin