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16681 (1994 EV7)
Classification: Inner Main-belt Asteroid          SPK-ID: 2016681
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06366917495684725 2.5943e-08  
a 1.893352910739532 6.087e-09 au
q 1.772804693010601 4.9038e-08 au
i 23.41664580503684 1.218e-06 deg
node 342.4818749789358 9.143e-07 deg
peri 63.85501154351218 1.843e-05 deg
M 201.2153737538736 2.0749e-05 deg
tp 2459620.212336680057
(2022-Feb-09.71233668)
5.5277e-05 TDB
period 951.5810489776969
2.61
4.5889e-06
1.256e-08
d
yr
n .3783177485372953 1.8244e-09 deg/d
Q 2.013901128468464 6.4746e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1433  
   data-arc span      13802 days (37.79 yr)  
   first obs. used      1982-08-17  
   last obs. used      2020-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40753  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:38:38  

Additional Information
 Earth MOID = .815611 au 
 Jupiter MOID = 3.14925 au 
 T_jup = 3.853 
[ 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 14.44   n/a E2021B10  
diameter diameter 4.328 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.3147 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Warner, B.D (2012) Minor Planet Bull. 39, 69-80.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.]
geometric albedo albedo 0.197   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16681 (1994 EV7)          Discovered 1994-Mar-11 by Helin, E. F. at Palomar
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 EV7 = 1982 QQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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