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 ]  
17378 (1981 EM5)
Classification: Main-belt Asteroid          SPK-ID: 2017378
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04805324503185925 4.3173e-08  
a 3.092927738006785 2.4071e-08 au
q 2.944302523546511 1.2756e-07 au
i 8.177388043454464 4.6769e-06 deg
node 271.9214596024577 4.2026e-05 deg
peri 182.8390541462931 7.7569e-05 deg
M 159.5606460640417 6.6606e-05 deg
tp 2458119.904681376597
(2018-Jan-01.40468138)
0.00036385 TDB
period 1986.795131032419
5.44
2.3194e-05
6.35e-08
d
yr
n .1811963369433715 2.1153e-09 deg/d
Q 3.241552952467059 2.5228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      872  
   data-arc span      13970 days (38.25 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5495  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:30:37  

Additional Information
 Earth MOID = 1.96108 au 
 Jupiter MOID = 1.91211 au 
 T_jup = 3.207 
[ 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 14.0   n/a MPO344441  
diameter diameter 6.867 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.113   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17378 (1981 EM5)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/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-Aug-03 13:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin