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 ]  
91437 (1999 RB9)
Classification: Main-belt Asteroid          SPK-ID: 2091437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09115489704089895 4.1885e-08  
a 2.942960941360355 1.8551e-08 au
q 2.674695639755265 1.2553e-07 au
i 6.242123749176929 5.0431e-06 deg
node 348.9444310167268 3.47e-05 deg
peri 310.0562680819404 4.2586e-05 deg
M 79.43189621848342 2.3388e-05 deg
tp 2458593.618818710482
(2019-Apr-20.11881871)
0.00012044 TDB
period 1844.060537864159
5.05
1.7436e-05
4.774e-08
d
yr
n .1952213566789742 1.8458e-09 deg/d
Q 3.211226242965445 2.0242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      10096 days (27.64 yr)  
   first obs. used      1992-03-11  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54396  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:55:22  

Additional Information
 Earth MOID = 1.66467 au 
 Jupiter MOID = 2.01112 au 
 T_jup = 3.257 
[ 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 14.9   n/a MPO439643  

91437 (1999 RB9)          Discovered 1999-Sep-04 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RB9 = 1997 CB18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 08:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin