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 ]  
100449 (1996 RJ9)
Classification: Main-belt Asteroid          SPK-ID: 2100449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988578925864905 4.3186e-08  
a 2.744090568075246 1.196e-08 au
q 2.198406500641337 1.1497e-07 au
i 8.166943649596638 4.6899e-06 deg
node 346.9998253956567 2.5582e-05 deg
peri 9.218776284460832 2.7418e-05 deg
M 114.896004304092 9.6706e-06 deg
tp 2458670.594394854329
(2019-Jul-06.09439485)
4.368e-05 TDB
period 1660.336397317582
4.55
1.0854e-05
2.972e-08
d
yr
n .216823530810751 1.4175e-09 deg/d
Q 3.289774635509155 1.4338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      12226 days (33.47 yr)  
   first obs. used      1987-09-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:13  

Additional Information
 Earth MOID = 1.19259 au 
 Jupiter MOID = 2.15738 au 
 T_jup = 3.305 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457257.5 (2015-Aug-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2012376391062621 4.3827e-08  
q 2.18964986481167 1.1719e-07 au
tp 2457006.977609792780
(2014-Dec-15.47760979)
4.0703e-05 TDB
node 347.1810166882112 2.5472e-05 deg
peri 8.301836250301559 2.7231e-05 deg
i 8.193230530304955 4.7005e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      12226 days (33.47 yr)  
   first obs. used      1987-09-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:13  

Additional Information
 Jupiter MOID = 2.15738 au 
 T_jup = 3.305 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.920840443333438E-15 -5.122095985217077E-15 -3.911406228590953E-13 8.841619489500369E-15 -1.3787997632546E-13 -5.30684592046597E-15
q -5.122095985217077E-15 1.373408094999701E-14 1.082323543473487E-12 -2.45783105114517E-14 3.798716696725337E-13 1.448196221993095E-14
tp -3.911406228590953E-13 1.082323543473487E-12 1.656733102044621E-9 8.444261276950271E-12 4.026944391883638E-10 -3.51052486168465E-13
node 8.841619489500369E-15 -2.45783105114517E-14 8.444261276950271E-12 6.488329949538187E-10 -6.396299790360763E-10 -1.747956168431564E-11
peri -1.3787997632546E-13 3.798716696725337E-13 4.026944391883638E-10 -6.396299790360763E-10 7.415052033328566E-10 1.727924848793243E-11
i -5.30684592046597E-15 1.448196221993095E-14 -3.51052486168465E-13 -1.747956168431564E-11 1.727924848793243E-11 2.209430397168006E-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 15.28   n/a E2021B55  
diameter diameter 6.026 km 0.531 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.043   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

100449 (1996 RJ9)          Discovered 1996-Sep-07 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1996 RJ9 = 2001 SD261 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 15:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin