Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
4444 Escher (1985 SA)
Classification: Main-belt Asteroid          SPK-ID: 2004444
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .136005448892744 6.3182e-08  
a 2.323652864000366 1.6105e-08 AU
q 2.007623413161086 1.4733e-07 AU
i 7.394929217846844 7.0768e-06 deg
node 121.2991680574537 5.9776e-05 deg
peri 181.4952033562539 7.0369e-05 deg
M 316.2823159790777 4.3116e-05 deg
tp 2456557.612212787272
(2013-Sep-22.11221279)		 0.00015597 JED
period 1293.764705750412
3.54		 1.3451e-05
3.683e-08		 d
yr
n .2782577066756447 2.8929e-09 deg/d
Q 2.639682314839646 1.8296e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      10100 days (27.65 yr)  
   first obs. used      1985-08-13  
   last obs. used      2013-04-08  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .57372  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:03:37  

Additional Information
 Earth MOID = .992223 AU 
 T_jup = 3.552 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a PDS3 (MPC 17272)  

4444 Escher           Discovered 1985 Sept. 16 by H. U. Norgaard-Nielsen, L. Hansen and P. R. Christensen at the European Southern Observatory.
The prints of Dutch graphic artist Maurits C. Escher (1898-1972) are characterized by their sophisticated use of visual illusion. The name was suggested by J. Meeus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2013-Jun-20 09:23 UT
(server date/time)   		NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster:   Alan B. Chamberlin