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 ]  
21190 (1994 JQ)
Classification: Main-belt Asteroid          SPK-ID: 2021190
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05178901932377981 3.3785e-08  
a 2.537423361530476 1.1779e-08 au
q 2.406012694027564 8.8149e-08 au
i 2.325491019172265 3.5674e-06 deg
node 39.85547959550052 8.9963e-05 deg
peri 7.59394516041645 9.9301e-05 deg
M 70.53066908709185 4.0227e-05 deg
tp 2459107.256684608586
(2020-Sep-14.75668461)
0.00016594 TDB
period 1476.344899157721
4.04
1.028e-05
2.815e-08
d
yr
n .2438454592862318 1.6979e-09 deg/d
Q 2.668834029033388 1.2389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1093  
   data-arc span      9802 days (26.84 yr)  
   first obs. used      1994-04-13  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48771  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:09  

Additional Information
 Earth MOID = 1.41476 au 
 Jupiter MOID = 2.50777 au 
 T_jup = 3.444 
[ 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 15.10   n/a MPCxxxxx  
diameter diameter 2.595 km 0.720 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.288   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21190 (1994 JQ)          Discovered 1994-May-10 by Vagnozzi, A. at Stroncone
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 JQ = 1998 HU85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-31 06:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin