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58521 (1997 AC8)
Classification: Main-belt Asteroid          SPK-ID: 2058521
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07728121179099021 6.0527e-08  
a 2.971669553796739 2.5718e-08 au
q 2.742015329636936 1.9431e-07 au
i 8.17972659916332 6.2729e-06 deg
node 293.4068396515192 4.5218e-05 deg
peri 108.8325154553961 8.7624e-05 deg
M 206.3753693566221 7.3899e-05 deg
tp 2459398.968062908840
(2021-Jul-03.46806291)
0.00038994 TDB
period 1871.109479276544
5.12
2.429e-05
6.65e-08
d
yr
n .1923992176765586 2.4976e-09 deg/d
Q 3.201323777956542 2.7705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      766  
   data-arc span      7774 days (21.28 yr)  
   first obs. used      1997-01-02  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54338  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:28:13  

Additional Information
 Earth MOID = 1.76444 au 
 Jupiter MOID = 2.11763 au 
 T_jup = 3.243 
[ 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 14.2   n/a MPO347911  
diameter diameter 4.874 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.129   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58521 (1997 AC8)          Discovered 1997-Jan-02 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AC8 = 2000 RQ42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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