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16980 (1999 AP5)
Classification: Main-belt Asteroid          SPK-ID: 2016980
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1153496979317187 2.0239e-08  
a 2.227896191664644 6.2186e-09 au
q 1.970909038932901 4.3817e-08 au
i 4.849488272129594 7.6828e-07 deg
node 26.29843314735415 6.4459e-06 deg
peri 203.6557922285918 5.5762e-06 deg
M 125.9709496610277 4.8548e-06 deg
tp 2458775.480597736253
(2019-Oct-18.98059774)
1.6267e-05 TDB
period 1214.621190255943
3.33
5.0855e-06
1.392e-08
d
yr
n .2963887036452422 1.2409e-09 deg/d
Q 2.484883344396387 6.936e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2335  
   data-arc span      12731 days (34.86 yr)  
   first obs. used      1986-04-03  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44952  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:50:09  

Additional Information
 Earth MOID = .960684 au 
 Jupiter MOID = 2.49859 au 
 T_jup = 3.631 
[ 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 14.55   n/a E2021B10  
diameter diameter 3.481 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.278   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16980 (1999 AP5)          Discovered 1999-Jan-12 by Kobayashi, T. at Oizumi
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AP5 = 1986 GH2 = 1986 GU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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