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1010 Marlene (A923 VH)
Classification: Main-belt Asteroid          SPK-ID: 2001010
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039277580235196 3.608e-08  
a 2.931564281888956 1.0516e-08 au
q 2.626893378570407 1.0723e-07 au
i 3.907057697631022 3.6444e-06 deg
node 98.74228603003105 5.6597e-05 deg
peri 279.6562832554633 5.9556e-05 deg
M 102.4020248884898 1.8284e-05 deg
tp 2458479.000852332774
(2018-Dec-26.50085233)
9.2948e-05 TDB
period 1833.359187619966
5.02
9.8652e-06
2.701e-08
d
yr
n .1963608672162848 1.0566e-09 deg/d
Q 3.236235185207505 1.1609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3244  
   data-arc span      42551 days (116.50 yr)  
   first obs. used      1903-10-27  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:15  

Additional Information
 Earth MOID = 1.63246 au 
 Jupiter MOID = 2.22678 au 
 T_jup = 3.265 
[ 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 10.7   n/a MPO365255  
diameter diameter 46.876 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 31.06 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 54-58.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.047   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1010 Marlene (A923 VH)          Discovered 1923-Nov-12 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A923 VH = 1937 NB1 = 1950 CJ = 1950 EY = A903 UD = A908 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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