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 ]  
123742 (2001 AQ20)
Classification: Main-belt Asteroid          SPK-ID: 2123742
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276179668208972 4.4582e-08  
a 2.657467138381958 2.1131e-08 au
q 2.318326585288304 1.2235e-07 au
i 12.70898322558904 4.8622e-06 deg
node 108.6692806629031 3.201e-05 deg
peri 5.143287085889506 4.4886e-05 deg
M 156.2105257847595 3.2122e-05 deg
tp 2458313.893240661497
(2018-Jul-14.39324066)
0.0001379 TDB
period 1582.341728382921
4.33
1.8873e-05
5.167e-08
d
yr
n .2275109058571711 2.7136e-09 deg/d
Q 2.996607691475611 2.3828e-08 au
  Orbit Determination Parameters
   # obs. used (total)      465  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1997-02-06  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52829  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:01:33  

Additional Information
 Earth MOID = 1.33515 au 
 Jupiter MOID = 2.11913 au 
 T_jup = 3.341 
[ 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 15.7   n/a MPO475084  
diameter diameter 4.475 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123742 (2001 AQ20)          Discovered 2001-Jan-03 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-28 03:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin