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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21046 (1990 SH3)
Classification: Main-belt Asteroid          SPK-ID: 2021046
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2738177610606198 3.1929e-08  
a 3.054647650861637 1.4096e-08 au
q 2.218230870273622 9.9016e-08 au
i 5.569493859820406 3.8443e-06 deg
node 85.36165643498798 4.2626e-05 deg
peri 255.1357646514164 4.3277e-05 deg
M 278.1849167887948 8.8308e-06 deg
tp 2459839.670645270396
(2022-Sep-17.17064527)
4.9282e-05 TDB
period 1950.024690257751
5.34
1.3498e-05
3.696e-08
d
yr
n .1846130471057861 1.2778e-09 deg/d
Q 3.891064431449653 1.7955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      15350 days (42.03 yr)  
   first obs. used      1979-07-20  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48186  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:48  

Additional Information
 Earth MOID = 1.21696 au 
 Jupiter MOID = 1.55471 au 
 T_jup = 3.170 
[ 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 13.85   n/a MPO636380  
diameter diameter 8.642 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21046 (1990 SH3)          Discovered 1990-Sep-18 by Holt, H. E. at Palomar
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 SH3 = 1979 OS13 = 1979 PH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 13:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin