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8734 Warner (1997 AA)
Classification: Main-belt Asteroid          SPK-ID: 2008734
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04896680555635304 2.656e-08  
a 2.869722380566741 1.0967e-08 au
q 2.729201242756814 7.814e-08 au
i 3.330626754869809 3.2332e-06 deg
node 92.82134542939362 5.2275e-05 deg
peri 296.7096937449413 6.4196e-05 deg
M 82.25743926591298 3.5819e-05 deg
tp 2458990.775775615530
(2020-May-21.27577562)
0.00017707 TDB
period 1775.653631840397
4.86
1.0178e-05
2.787e-08
d
yr
n .2027422429378154 1.1622e-09 deg/d
Q 3.010243518376667 1.1504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2537  
   data-arc span      14882 days (40.74 yr)  
   first obs. used      1980-07-12  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 12:33:06  

Additional Information
 Earth MOID = 1.73537 au 
 Jupiter MOID = 2.21572 au 
 T_jup = 3.294 
[ 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 13.59   n/a E2021B10  
diameter diameter 4.914 km 0.502 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.319   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

8734 Warner           Discovered 1997 Jan. 1 by P. G. Comba at Prescott.
Named in honor of Brian D. Warner (b. 1952). For more than eight years he has published the Minor Planet Observer, a monthly newsletter with minor-planet finder charts and other news of interest to minor planet observers. In recent years he has taken up CCD imaging and contributed hundreds of astrometric observations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1997 AA = 1990 QJ17 = 1993 HN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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