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85182 (1991 AQ)
Classification: Apollo [NEO, PHA]          SPK-ID: 2085182
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7766331581130346 1.9493e-08  
a 2.222097659728458 7.0616e-09 au
q .4963429366179625 4.1892e-08 au
i 3.125950285947082 6.0613e-06 deg
node 339.6422214581106 8.4263e-05 deg
peri 243.011550847529 8.3742e-05 deg
M 183.9091265331888 1.4004e-05 deg
tp 2459192.303442045828
(2020-Dec-08.80344205)
4.9807e-05 TDB
period 1209.882346211728
3.31
5.7674e-06
1.579e-08
d
yr
n .2975495932535909 1.4184e-09 deg/d
Q 3.947852382838954 1.2546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      351  
   # delay obs. used      5  
   # Doppler obs. used      3  
   data-arc span      9829 days (26.91 yr)  
   first obs. used      1991-01-14  
   last obs. used      2017-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59674  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Dec-13 06:22:10  

Additional Information
 Earth MOID = .0165405 au 
 Jupiter MOID = 1.0799 au 
 T_jup = 3.164 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO186589  
diameter diameter 1.1 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
geometric albedo albedo 0.242   0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

85182 (1991 AQ)          Discovered 1991-Jan-14 by Helin, E. F. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1991 AQ = 1994 RD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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