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 ]  
160556 (1998 RR4)
Classification: Main-belt Asteroid          SPK-ID: 2160556
[ 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2567130019452734 5.3717e-08  
a 2.725880171007682 1.8617e-08 au
q 2.026111289365205 1.4706e-07 au
i 17.28711313527261 6.0522e-06 deg
node 161.9871899565276 1.9184e-05 deg
peri 230.270043079396 2.1931e-05 deg
M 276.9568570072704 1.1431e-05 deg
tp 2459379.692592324009
(2021-Jun-14.19259232)		 5.4285e-05 TDB
period 1643.836303842628
4.50		 1.684e-05
4.611e-08		 d
yr
n .2189999084206042 2.2436e-09 deg/d
Q 3.425649052650159 2.3396e-08 au
   Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      7544 days (20.65 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:33:16  

Additional Information
 Earth MOID = 1.07051 au 
 Jupiter MOID = 2.17401 au 
 T_jup = 3.245 
[ 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 15.6   n/a MPO436809  

160556 (1998 RR4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 RR4 = 2000 FY6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-11 17:08 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin