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 ]  
21767 (1999 RB209)
Classification: Main-belt Asteroid          SPK-ID: 2021767
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1609567996897296 4.7387e-08  
a 3.156908902966776 2.2093e-08 au
q 2.648782949033228 1.5195e-07 au
i 7.609063132939188 5.2141e-06 deg
node 319.62364451 3.6107e-05 deg
peri 59.67533211695365 3.9032e-05 deg
M 317.9693748894044 1.7297e-05 deg
tp 2459635.696516260924
(2022-Feb-25.19651626)
9.9918e-05 TDB
period 2048.761959341522
5.61
2.1507e-05
5.888e-08
d
yr
n .1757158748279889 1.8446e-09 deg/d
Q 3.665034856900323 2.565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      14125 days (38.67 yr)  
   first obs. used      1982-11-04  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54469  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:04:28  

Additional Information
 Earth MOID = 1.65993 au 
 Jupiter MOID = 1.89189 au 
 T_jup = 3.172 
[ 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 13.65   n/a E2021B10  
diameter diameter 5.314 km 0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.189   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21767 (1999 RB209)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ 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 2021-Jul-27 02:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin