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 ]  
74772 (1999 RT229)
Classification: Main-belt Asteroid          SPK-ID: 2074772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229878938593613 2.7416e-08  
a 2.333273558081486 8.3596e-09 au
q 1.812981801567157 6.5981e-08 au
i 4.592463679453493 3.1906e-06 deg
node 95.40993263960509 5.8727e-05 deg
peri 215.4084115578837 5.9623e-05 deg
M 309.1491641172753 1.0744e-05 deg
tp 2459184.383394154174
(2020-Nov-30.88339415)
3.8894e-05 TDB
period 1301.807939758794
3.56
6.9961e-06
1.915e-08
d
yr
n .2765384885167489 1.4862e-09 deg/d
Q 2.853565314595814 1.0224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      803  
   data-arc span      9645 days (26.41 yr)  
   first obs. used      1994-01-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56435  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:47  

Additional Information
 Earth MOID = .800841 au 
 Jupiter MOID = 2.42245 au 
 T_jup = 3.531 
[ 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 16.0   n/a MPO436306  
diameter diameter 3.549 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74772 (1999 RT229)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RT229 = 2002 GF22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-05 00:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin