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 ]  
102121 (1999 RL174)
Classification: Main-belt Asteroid          SPK-ID: 2102121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1747679128263042 3.6019e-08  
a 2.372176846907796 1.1154e-08 au
q 1.957596450518837 8.6205e-08 au
i 2.179701583247874 4.1871e-06 deg
node 108.6967125594768 0.00011702 deg
peri 168.5420490116032 0.0001178 deg
M 348.9962153054176 1.4725e-05 deg
tp 2459241.290460138656
(2021-Jan-26.79046014)
5.4663e-05 TDB
period 1334.50136089504
3.65
9.412e-06
2.577e-08
d
yr
n .269763681438699 1.9026e-09 deg/d
Q 2.786757243296754 1.3103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      512  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59001  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:34  

Additional Information
 Earth MOID = .939358 au 
 Jupiter MOID = 2.33299 au 
 T_jup = 3.522 
[ show covariance matrix ]

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 16.5   n/a MPO432548  

102121 (1999 RL174)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RL174 = 1998 FR7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-08 20:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin