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JPL Small-Body Database Browser
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37544 (1981 EY16)
Classification: Main-belt Asteroid          SPK-ID: 2037544
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534995896813209 3.7562e-08  
a 2.306522564537584 9.2893e-09 au
q 1.952472297290357 8.6158e-08 au
i 3.24436842775334 4.1898e-06 deg
node 237.897393804473 6.7521e-05 deg
peri 131.742169576088 6.8788e-05 deg
M 237.143099476986 1.4447e-05 deg
tp 2459437.148569937361
(2021-Aug-10.64856994)
5.2628e-05 TDB
period 1279.484379861952
3.50
7.7295e-06
2.116e-08
d
yr
n .281363341097483 1.6998e-09 deg/d
Q 2.660572831784812 1.0715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1197  
   data-arc span      13954 days (38.20 yr)  
   first obs. used      1981-02-12  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:57:32  

Additional Information
 Earth MOID = .953862 au 
 Jupiter MOID = 2.81292 au 
 T_jup = 3.570 
[ 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 15.5   n/a MPO468205  

37544 (1981 EY16)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EY16 = 1999 KW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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