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JPL Small-Body Database Browser
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91277 (1999 EW6)
Classification: Main-belt Asteroid          SPK-ID: 2091277
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133383985058429 3.0737e-08  
a 2.369663824757226 7.7587e-09 au
q 2.053588620562308 7.4607e-08 au
i 1.972258351214864 4.0229e-06 deg
node 185.4634158487513 9.9086e-05 deg
peri 266.9427962506338 0.00010054 deg
M 359.0154753323674 1.6133e-05 deg
tp 2459004.143784097445
(2020-Jun-03.64378410)
5.9714e-05 TDB
period 1332.381318829038
3.65
6.5437e-06
1.792e-08
d
yr
n .2701929206845872 1.327e-09 deg/d
Q 2.685739028952143 8.7936e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1062  
   data-arc span      7656 days (20.96 yr)  
   first obs. used      1999-02-10  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:26:51  

Additional Information
 Earth MOID = 1.07137 au 
 Jupiter MOID = 2.47974 au 
 T_jup = 3.533 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO348073  
diameter diameter 4.127 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91277 (1999 EW6)          Discovered 1999-Mar-14 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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