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JPL Small-Body Database Browser
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27169 (1999 AS23)
Classification: Main-belt Asteroid          SPK-ID: 2027169
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09323260496620261 3.5744e-08  
a 2.99334391843318 1.7168e-08 au
q 2.714266667357914 1.0627e-07 au
i 11.81272375877799 4.7957e-06 deg
node 148.546415328756 2.3676e-05 deg
peri 149.7075958186371 3.8825e-05 deg
M 186.9108327101311 3.2033e-05 deg
tp 2459509.995890893179
(2021-Oct-22.49589089)
0.00017091 TDB
period 1891.617631814146
5.18
1.6274e-05
4.456e-08
d
yr
n .1903133032518542 1.6373e-09 deg/d
Q 3.272421169508446 1.8768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      14369 days (39.34 yr)  
   first obs. used      1980-08-04  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53657  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:35:18  

Additional Information
 Earth MOID = 1.70537 au 
 Jupiter MOID = 2.02578 au 
 T_jup = 3.217 
[ 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 12.8   n/a MPO279798  
diameter diameter 8.174 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.220   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27169 (1999 AS23)          Discovered 1999-Jan-14 by LONEOS at Anderson Mesa
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AS23 = 1980 PT4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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