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 ]  
58130 (1981 ER38)
Classification: Main-belt Asteroid          SPK-ID: 2058130
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630219618044023 3.9936e-08  
a 2.665015065909621 1.321e-08 au
q 2.230559081626746 1.0605e-07 au
i 11.52902838929314 6.4787e-06 deg
node 189.1586713002935 2.142e-05 deg
peri 267.7652100148313 2.9623e-05 deg
M 338.796848614879 1.9662e-05 deg
tp 2458694.093533329750
(2019-Jul-29.59353333)
8.6907e-05 TDB
period 1589.087932577521
4.35
1.1815e-05
3.235e-08
d
yr
n .2265450467653325 1.6844e-09 deg/d
Q 3.099471050192497 1.5363e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      13840 days (37.89 yr)  
   first obs. used      1981-02-12  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5432  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:33:15  

Additional Information
 Earth MOID = 1.28234 au 
 Jupiter MOID = 2.19428 au 
 T_jup = 3.336 
[ 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 15.2   n/a MPO468480  
diameter diameter 4.744 km 1.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.050   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

58130 (1981 ER38)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ER38 = 2001 QN144 
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-19 08:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin