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 ]  
268101 (2004 RA321)
Classification: Main-belt Asteroid          SPK-ID: 2268101
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1033101281694791 5.144e-08  
a 2.773204540898675 2.3806e-08 au
q 2.486704424338252 1.446e-07 au
i 4.532174333343536 6.2942e-06 deg
node 275.3066256231673 8.8396e-05 deg
peri 149.0989805582258 9.8306e-05 deg
M 84.63472879634857 4.0669e-05 deg
tp 2458603.932255748769
(2019-Apr-30.43225575)
0.00018961 TDB
period 1686.829862407527
4.62
2.172e-05
5.947e-08
d
yr
n .2134180856190144 2.748e-09 deg/d
Q 3.059704657459099 2.6265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      6975 days (19.10 yr)  
   first obs. used      2000-12-27  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 13:00:56  

Additional Information
 Earth MOID = 1.5016 au 
 Jupiter MOID = 2.20529 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457237.5 (2015-Aug-03.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016279596602266 5.1243e-08  
q 2.493344336066724 1.4368e-07 au
tp 2456919.664517488251
(2014-Sep-19.16451749)
0.00019144 TDB
node 275.4573003325329 8.8341e-05 deg
peri 149.7131842480044 9.8615e-05 deg
i 4.531959625143489 6.2968e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      6975 days (19.10 yr)  
   first obs. used      2000-12-27  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 13:00:56  

Additional Information
 Jupiter MOID = 2.20529 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.625861436805505E-15 -7.280747089604479E-15 -1.013409435730575E-12 1.654551407816927E-15 -2.748651529892149E-13 -1.802785225900142E-16
q -7.280747089604479E-15 2.064356909529495E-14 2.918915873189848E-12 -2.167554417590565E-15 8.008407230301833E-13 7.581387147561869E-16
tp -1.013409435730575E-12 2.918915873189848E-12 3.665058835573102E-8 -3.40048538420458E-11 8.449273468024792E-9 5.998868949874068E-12
node 1.654551407816927E-15 -2.167554417590565E-15 -3.40048538420458E-11 7.804214057782379E-9 -7.78704505918493E-9 1.00939947195977E-10
peri -2.748651529892149E-13 8.008407230301833E-13 8.449273468024792E-9 -7.78704505918493E-9 9.724914967561428E-9 -9.917959488439421E-11
i -1.802785225900142E-16 7.581387147561869E-16 5.998868949874068E-12 1.00939947195977E-10 -9.917959488439421E-11 3.964990596956765E-11

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 16.3   n/a MPO413198  
diameter diameter 2.992 km 0.706 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

268101 (2004 RA321)          Discovered 2004-Sep-13 by LINEAR at Socorro
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2004 RA321 = 2000 YA144 = 2005 YZ32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-29 14:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin