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 ]  
101939 (1999 RN23)
Classification: Main-belt Asteroid          SPK-ID: 2101939
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1697485805119054 3.6777e-08  
a 2.22535157985556 7.6411e-09 au
q 1.847601308035152 8.1407e-08 au
i 1.815210680304826 3.6326e-06 deg
node 111.84916892898 0.00017724 deg
peri 220.2118912724558 0.00017786 deg
M 103.4908311567872 1.5621e-05 deg
tp 2458651.925388220315
(2019-Jun-17.42538822)
5.2484e-05 TDB
period 1212.540848672631
3.32
6.2451e-06
1.71e-08
d
yr
n .2968972141384696 1.5292e-09 deg/d
Q 2.603101851675967 8.9381e-09 au
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:38  

Additional Information
 Earth MOID = .837459 au 
 Jupiter MOID = 2.74144 au 
 T_jup = 3.627 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457171.5 (2015-May-29.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1704133296879469 3.6879e-08  
q 1.845640077026838 8.1699e-08 au
tp 2457440.021483723552
(2016-Feb-21.52148372)
5.2245e-05 TDB
node 111.8678637578544 0.00017733 deg
peri 220.325123617355 0.00017795 deg
i 1.81500487639224 3.6318e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:38  

Additional Information
 Jupiter MOID = 2.74144 au 
 T_jup = 3.627 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.360082796689977E-15 -3.004000426504425E-15 8.54146452359303E-13 1.65442133062775E-14 2.274065917943885E-13 -9.019076783719725E-16
q -3.004000426504425E-15 6.674754872605155E-15 -1.925211329498743E-12 -3.668465359041378E-14 -5.171561790692653E-13 2.040247574252941E-15
tp 8.54146452359303E-13 -1.925211329498743E-12 2.729529112602895E-9 2.930158505840926E-11 8.106569927043815E-10 -1.22451935492955E-12
node 1.65442133062775E-14 -3.668465359041378E-14 2.930158505840926E-11 3.144603720554605E-8 -3.14211732211191E-8 -1.604638919685167E-10
peri 2.274065917943885E-13 -5.171561790692653E-13 8.106569927043815E-10 -3.14211732211191E-8 3.166458312674034E-8 1.600021114293896E-10
i -9.019076783719725E-16 2.040247574252941E-15 -1.22451935492955E-12 -1.604638919685167E-10 1.600021114293896E-10 1.319010259489541E-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 16.6   n/a MPO502728  

101939 (1999 RN23)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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-Jan-21 03:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin