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 ]  
172777 (2004 EL57)
Classification: Main-belt Asteroid          SPK-ID: 2172777
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387968157117092 5.7521e-08  
a 3.166110751266932 3.7493e-08 au
q 2.726664660800474 1.8759e-07 au
i 17.71304364013536 6.6255e-06 deg
node 232.61969872937 1.9976e-05 deg
peri 321.5470975478341 2.9803e-05 deg
M 304.869442571086 2.4961e-05 deg
tp 2459315.621085304775
(2021-Apr-11.12108530)
0.00014552 TDB
period 2057.726168577101
5.63
3.6552e-05
1.001e-07
d
yr
n .1749503920868814 3.1077e-09 deg/d
Q 3.605556841733389 4.2697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      8455 days (23.15 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:54:06  

Additional Information
 Earth MOID = 1.74435 au 
 Jupiter MOID = 1.47767 au 
 T_jup = 3.115 
[ 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 14.7   n/a MPO427054  
diameter diameter 6.894 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172777 (2004 EL57)          Discovered 2004-Mar-15 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ 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-14 23:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin