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 ]  
20478 Rutenberg (1999 NJ20)
Classification: Main-belt Asteroid          SPK-ID: 2020478
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1725371073466456 3.8371e-08  
a 2.597923081745561 1.1696e-08 au
q 2.149684948112099 1.0386e-07 au
i 5.9783910575011 3.3285e-06 deg
node 107.6089807029616 3.3157e-05 deg
peri 229.7255513252556 3.4327e-05 deg
M 9.632796778978799 7.9201e-06 deg
tp 2459159.575087735491
(2020-Nov-06.07508774)
3.3655e-05 TDB
period 1529.459071261043
4.19
1.0328e-05
2.828e-08
d
yr
n .2353773348790426 1.5895e-09 deg/d
Q 3.046161215379023 1.3714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1781  
   data-arc span      8798 days (24.09 yr)  
   first obs. used      1996-12-18  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48535  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:22:01  

Additional Information
 Earth MOID = 1.14387 au 
 Jupiter MOID = 2.33592 au 
 T_jup = 3.387 
[ 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 14.33   n/a E2021B10  
diameter diameter 3.723 km 0.633 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.320   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20478 Rutenberg           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Lev Rutenberg- Schoenberg (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochemistry, medicine, health, and microbiology project. He attends the Portland Jewish Academy, Portland, Oregon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

Alternate Designations
 1999 NJ20 = 1998 HK135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-14 13:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin