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 ]  
20512 Rothenberg (1999 RW32)
Classification: Main-belt Asteroid          SPK-ID: 2020512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08522030250002736 4.0547e-08  
a 3.06590985541091 2.2242e-08 au
q 2.804632090094977 1.2293e-07 au
i 8.560527365508534 5.98e-06 deg
node 308.790360179812 3.1842e-05 deg
peri 103.414900125659 4.9519e-05 deg
M 215.0244992658897 3.7978e-05 deg
tp 2459390.140865335661
(2021-Jun-24.64086534)
0.00020904 TDB
period 1960.818966524554
5.37
2.1337e-05
5.842e-08
d
yr
n .1835967553078501 1.9978e-09 deg/d
Q 3.327187620726843 2.4137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1127  
   data-arc span      9963 days (27.28 yr)  
   first obs. used      1991-02-10  
   last obs. used      2018-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51102  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 13:53:14  

Additional Information
 Earth MOID = 1.83141 au 
 Jupiter MOID = 1.9757 au 
 T_jup = 3.210 
[ 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 13.6   n/a MPO435890  

20512 Rothenberg           Discovered 1999 Sept. 10 by A. Knöfel at Drebach.
Eckehard Rothenberg (b. 1938) is technical director of the Archenhold Observatory in Berlin-Treptow and in the past leader of a youth study group there. Many of the group's former members (including the discoverer) are today active amateur and professional astronomers and owe him for a considerable share of their knowledge.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-29 08:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin