Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7764382357134696 1.9496e-08  
a 2.222167320937678 7.0755e-09 au
q .4967916468087 4.19e-08 au
i 3.125421699737057 6.0627e-06 deg
node 339.6043587164261 8.4253e-05 deg
peri 243.0485161357634 8.3731e-05 deg
M 302.8957178595333 1.4558e-05 deg
tp 2459192.424199277489
(2020-Dec-08.92419928)
4.9822e-05 TDB
period 1209.939240107068
3.31
5.7788e-06
1.582e-08
d
yr
n .2975356018440591 1.4211e-09 deg/d
Q 3.947542995066656 1.2569e-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 = .0165497 au 
 Jupiter MOID = 1.0798 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-09 21:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin