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1018 Arnolda (A924 ET)
Classification: Main-belt Asteroid          SPK-ID: 2001018
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2441331203042003 3.6428e-08  
a 2.541986612929538 7.4462e-09 au
q 1.921403489343544 9.1854e-08 au
i 7.63289001388473 4.1395e-06 deg
node 359.6200352877972 2.8723e-05 deg
peri 343.1341304414485 3.0464e-05 deg
M 87.41839096414483 1.0938e-05 deg
tp 2458641.033334355344
(2019-Jun-06.53333436)
4.4786e-05 TDB
period 1480.329232840188
4.05
6.5045e-06
1.781e-08
d
yr
n .243189144694047 1.0686e-09 deg/d
Q 3.162569736515531 9.2641e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3131  
   data-arc span      35151 days (96.24 yr)  
   first obs. used      1924-02-01  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:15  

Additional Information
 Earth MOID = .915355 au 
 Jupiter MOID = 2.25548 au 
 T_jup = 3.391 
[ 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 11.1   n/a MPO502162 IRAS observations used: 3
diameter diameter 16.557 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.617 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pligge, Z.; Monnier, A.; Pharo, J.; Stolze, K.; Yim, A.; Ditteon, R. (2011) Minor Planet Bull. 38, 5-7.]
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
geometric albedo albedo 0.371   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1018 Arnolda (A924 ET)          Discovered 1924-Mar-03 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A924 ET = 1926 VK = 1952 BV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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