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 ]  
43787 (1990 QR8)
Classification: Main-belt Asteroid          SPK-ID: 2043787
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790176730871604 5.0587e-08  
a 2.539545781934938 1.4781e-08 au
q 2.084922205354632 1.2818e-07 au
i 4.797787238657632 5.6085e-06 deg
node 132.8793822355101 5.1618e-05 deg
peri 218.9411641121153 5.4201e-05 deg
M 166.2094021136452 2.2154e-05 deg
tp 2458518.026829245531
(2019-Feb-03.52682925)
8.6889e-05 TDB
period 1478.197613054518
4.05
1.2905e-05
3.533e-08
d
yr
n .2435398331188637 2.1262e-09 deg/d
Q 2.994169358515244 1.7427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      11175 days (30.60 yr)  
   first obs. used      1990-08-16  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:26:57  

Additional Information
 Earth MOID = 1.07985 au 
 Jupiter MOID = 2.43708 au 
 T_jup = 3.419 
[ 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 15.46   n/a MPCxxxxx  
diameter diameter 2.238 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.387   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43787 (1990 QR8)          Discovered 1990-Aug-16 by Elst, E. W. at La Silla
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QR8 = 2001 FS153 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-20 20:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin