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 ]  
17397 (1981 EF48)
Classification: Outer Main-belt Asteroid          SPK-ID: 2017397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02416276469459011 5.1752e-08  
a 3.926608688469301 3.5205e-08 au
q 3.831730966682084 2.0724e-07 au
i 1.722979190766002 5.6363e-06 deg
node 221.5073062762071 0.00014723 deg
peri 178.9670839491685 0.00017409 deg
M 182.0654121243818 9.3544e-05 deg
tp 2460605.197267809658
(2024-Oct-21.69726781)
0.00074301 TDB
period 2842.00515733889
7.78
3.8221e-05
1.046e-07
d
yr
n .1266711283300717 1.7035e-09 deg/d
Q 4.021486410256518 3.6055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      15861 days (43.43 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53521  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:41  

Additional Information
 Earth MOID = 2.83779 au 
 Jupiter MOID = 1.12113 au 
 T_jup = 3.061 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457022.5 (2014-Dec-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02456304614096482 5.0342e-08  
q 3.837876191391678 2.0195e-07 au
tp 2457795.186791360607
(2017-Feb-10.68679136)
0.00075547 TDB
node 221.5450027806808 0.00014734 deg
peri 183.2831853541577 0.00017551 deg
i 1.7210493503029 5.6326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1289  
   data-arc span      15861 days (43.43 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53521  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:41  

Additional Information
 Jupiter MOID = 1.12113 au 
 T_jup = 3.061 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.534298497842951E-15 -1.001743944896222E-14 -1.723003015751353E-11 2.360741872612062E-15 -2.22296178147068E-12 1.039239595537644E-16
q -1.001743944896222E-14 4.07853282743347E-14 7.27990742385181E-11 1.012856247197074E-16 9.321575065703752E-12 1.334874426550616E-16
tp -1.723003015751353E-11 7.27990742385181E-11 5.707284439645204E-7 2.141297397544978E-11 7.207991351946176E-8 -8.175275020641301E-12
node 2.360741872612062E-15 1.012856247197074E-16 2.141297397544978E-11 2.170772108426243E-8 -2.169533110500877E-8 -3.598906797847554E-10
peri -2.22296178147068E-12 9.321575065703752E-12 7.207991351946176E-8 -2.169533110500877E-8 3.080441465768368E-8 3.586944896892893E-10
i 1.039239595537644E-16 1.334874426550616E-16 -8.175275020641301E-12 -3.598906797847554E-10 3.586944896892893E-10 3.172647552315817E-11

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 13.11   n/a E2021B10  
diameter diameter 13.225 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.070   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

17397 (1981 EF48)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EF48 = 1977 UQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-14 21:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin