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 ]  
74656 (1999 RR87)
Classification: Main-belt Asteroid          SPK-ID: 2074656
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736179110066343 2.9674e-08  
a 2.233840379771917 6.4589e-09 au
q 1.84600567951365 6.696e-08 au
i 3.015435245770063 3.4224e-06 deg
node 150.0817993060336 6.0992e-05 deg
peri 82.35496988563415 6.1733e-05 deg
M 60.88632437539116 9.927e-06 deg
tp 2458394.250032443867
(2018-Oct-02.75003244)		 3.3285e-05 TDB
period 1219.485476942636
3.34		 5.289e-06
1.448e-08		 d
yr
n .2952064676510568 1.2803e-09 deg/d
Q 2.621675080030184 7.5803e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1483  
   data-arc span      7962 days (21.80 yr)  
   first obs. used      1998-02-06  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:49:14  

Additional Information
 Earth MOID = .838152 au 
 Jupiter MOID = 2.37325 au 
 T_jup = 3.618 
[ 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 15.1   n/a MPO337820  

74656 (1999 RR87)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RR87 = 1998 CK4 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-12 14:25 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin