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 ]  
30765 (1981 EJ48)
Classification: Mars-crossing Asteroid          SPK-ID: 2030765
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3650078447083155 4.4492e-08  
a 2.336632925737365 5.6859e-09 au
q 1.483743577639484 1.0273e-07 au
i 21.79287298179213 5.1856e-06 deg
node 359.4429229135376 1.1986e-05 deg
peri 75.37134375284538 1.7343e-05 deg
M 106.8740468268273 6.1992e-06 deg
tp 2458813.194273160276
(2019-Nov-25.69427316)
2.2754e-05 TDB
period 1304.620399452313
3.57
4.762e-06
1.304e-08
d
yr
n .2759423355262037 1.0072e-09 deg/d
Q 3.189522273835247 7.7613e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      14342 days (39.27 yr)  
   first obs. used      1981-03-06  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44597  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:46  

Additional Information
 Earth MOID = .63833 au 
 Jupiter MOID = 2.62396 au 
 T_jup = 3.385 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.76   n/a E2021B10  

30765 (1981 EJ48)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EJ48 = 2001 QL27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-15 04:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin