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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1347968266981198 4.5217e-08  
a 2.323862713020273 1.3872e-08 au
q 2.010613393623057 1.0724e-07 au
i 7.390802787087974 5.0509e-06 deg
node 121.270074166148 4.4772e-05 deg
peri 181.7957287455774 5.5631e-05 deg
M 289.8321253045581 3.8824e-05 deg
tp 2457852.702826783919
(2017-Apr-09.20282678)
0.00014098 JED
period 1293.939969484481
3.54
1.1586e-05
3.172e-08
d
yr
n .2782200167627775 2.4912e-09 deg/d
Q 2.63711203241749 1.5742e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1323  
   data-arc span      11205 days (30.68 yr)  
   first obs. used      1985-08-13  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48707  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:48:09  

Additional Information
 Earth MOID = .994877 au 
 Jupiter MOID = 2.56567 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 13.7 mag n/a MPO337289  

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 ]
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