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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .22298789115205 2.6751e-08  
a 2.333273557781734 8.3263e-09 au
q 1.812981807651144 6.4602e-08 au
i 4.592463765301388 3.1873e-06 deg
node 95.40994613924725 5.6304e-05 deg
peri 215.4083975954945 5.725e-05 deg
M 309.149164846451 1.0623e-05 deg
tp 2459184.383391481942
(2020-Nov-30.88339148)
3.8442e-05 TDB
period 1301.807939507933
3.56
6.9683e-06
1.908e-08
d
yr
n .2765384885700386 1.4802e-09 deg/d
Q 2.853565307912324 1.0183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9674 days (26.49 yr)  
   first obs. used      1994-01-19  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:26  

Additional Information
 Earth MOID = .800841 au 
 Jupiter MOID = 2.42245 au 
 T_jup = 3.531 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457637.5 (2016-Sep-06.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .222282702925261 2.6758e-08  
q 1.815025980698326 6.4539e-08 au
tp 2457882.390012689296
(2017-May-08.89001269)
3.8952e-05 TDB
node 95.4162932592383 5.6309e-05 deg
peri 215.3745674591536 5.7262e-05 deg
i 4.591778105920551 3.1868e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9674 days (26.49 yr)  
   first obs. used      1994-01-19  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:26  

Additional Information
 Jupiter MOID = 2.42245 au 
 T_jup = 3.531 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.159878528133015E-16 -1.71888787872009E-15 2.961133374721866E-13 -1.686992996024229E-15 9.899311905262982E-14 -7.317003836740131E-16
q -1.71888787872009E-15 4.165294343421939E-15 -7.24048252235093E-13 5.368328984713231E-15 -2.446325930920653E-13 1.845835916033939E-15
tp 2.961133374721866E-13 -7.24048252235093E-13 1.517285347421055E-9 2.807501043801329E-11 4.303134803289201E-10 -2.346547752093543E-12
node -1.686992996024229E-15 5.368328984713231E-15 2.807501043801329E-11 3.170679656783659E-9 -3.152157464831188E-9 -4.959655581924587E-11
peri 9.899311905262982E-14 -2.446325930920653E-13 4.303134803289201E-10 -3.152157464831188E-9 3.278917435325819E-9 4.875607243862308E-11
i -7.317003836740131E-16 1.845835916033939E-15 -2.346547752093543E-12 -4.959655581924587E-11 4.875607243862308E-11 1.015578865496638E-11

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 2021-Jan-20 11:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin