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 ]  
58977 (1998 RK38)
Classification: Main-belt Asteroid          SPK-ID: 2058977
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329506333867393 6.8024e-08  
a 3.037254066433188 2.4407e-08 au
q 2.633449214544446 2.0958e-07 au
i 8.819739111065591 7.6199e-06 deg
node 353.1628816250767 2.7737e-05 deg
peri 341.6998944247728 3.4288e-05 deg
M 336.4148627419382 1.7927e-05 deg
tp 2458727.164822082090
(2019-Aug-31.66482208)
9.6175e-05 TDB
period 1933.392858842318
5.29
2.3305e-05
6.381e-08
d
yr
n .1862011635936018 2.2444e-09 deg/d
Q 3.44105891832193 2.7652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      8680 days (23.76 yr)  
   first obs. used      1996-01-25  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57114  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:20:47  

Additional Information
 Earth MOID = 1.62487 au 
 Jupiter MOID = 1.94917 au 
 T_jup = 3.210 
[ 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 14.5   n/a MPO493286  
diameter diameter 8.151 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58977 (1998 RK38)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ 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 2020-Jan-26 03:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin