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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
39690 (1996 RJ26)
Classification: Main-belt Asteroid          SPK-ID: 2039690
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548026115505172 3.1049e-08  
a 2.323505025763359 8.3124e-09 au
q 1.963820379824439 7.3222e-08 au
i 3.88474766595639 4.0231e-06 deg
node 165.974182374645 5.3741e-05 deg
peri 148.1285187689842 5.5405e-05 deg
M 279.8153366520962 1.4407e-05 deg
tp 2459288.639408679366
(2021-Mar-15.13940868)
5.247e-05 TDB
period 1293.641237533282
3.54
6.9421e-06
1.901e-08
d
yr
n .278284264257414 1.4934e-09 deg/d
Q 2.683189671702279 9.5992e-09 au
  Orbit Determination Parameters
   # obs. used (total)      881  
   data-arc span      8626 days (23.62 yr)  
   first obs. used      1996-09-14  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55624  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:45:20  

Additional Information
 Earth MOID = .951354 au 
 Jupiter MOID = 2.58652 au 
 T_jup = 3.557 
[ 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 15.9   n/a MPO319563  
diameter diameter 1.440 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39690 (1996 RJ26)          Discovered 1996-Sep-14 by JPL/GEODSS NEAT at Haleakala
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 RJ26 = 1999 JS118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-04 02:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin