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17923 (1999 GY16)
Classification: Main-belt Asteroid          SPK-ID: 2017923
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07335543642220471 2.1466e-08  
a 2.427453731663257 8.0002e-09 au
q 2.24938680378239 5.411e-08 au
i 6.9865483662188 6.3974e-07 deg
node 135.3945885147039 2.883e-06 deg
peri 21.26420340146355 1.4698e-05 deg
M 292.3974424687865 1.6978e-05 deg
tp 2459459.909271311176
(2021-Sep-02.40927131)
6.5585e-05 TDB
period 1381.417228614531
3.78
6.8292e-06
1.87e-08
d
yr
n .2606019329591364 1.2883e-09 deg/d
Q 2.605520659544125 8.5871e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2103  
   data-arc span      11006 days (30.13 yr)  
   first obs. used      1991-01-15  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:17:49  

Additional Information
 Earth MOID = 1.26073 au 
 Jupiter MOID = 2.37741 au 
 T_jup = 3.496 
[ 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 14.02   n/a E2021B10  
diameter diameter 3.568 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]
geometric albedo albedo 0.459   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17923 (1999 GY16)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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