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16591 (1992 SY17)
Classification: Mars-crossing Asteroid          SPK-ID: 2016591
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2797211079083738 4.9233e-08  
a 2.291408299021017 1.5588e-08 AU
q 1.650453030948416 1.0938e-07 AU
i 8.411836252108284 8.3119e-06 deg
node 239.6724621812408 3.3811e-05 deg
peri 71.72199414917263 3.9652e-05 deg
M 181.4783850106485 2.4458e-05 deg
tp 2457628.761512697266
(2016-Aug-28.26151270)
9.0643e-05 JED
period 1266.928627015315
3.47
1.2928e-05
3.539e-08
d
yr
n .2841517606624009 2.8995e-09 deg/d
Q 2.932363567093618 1.9948e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      23087 days (63.21 yr)  
   first obs. used      1951-11-08  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53757  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:46:36  

Additional Information
 Earth MOID = .661283 AU 
 T_jup = 3.531 
[ 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 14.2 mag n/a MPO313552  
rotation period rot_per 2.73728 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]

16591 (1992 SY17)          Discovered 1992-Sep-30 by Holt, H. E. at Palomar (675)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 SY17 = 1985 QE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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