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1010 Marlene (1923 PF)
Classification: Main-belt Asteroid          SPK-ID: 2001010
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023947711796135 4.0794e-08  
a 2.932997029659677 1.4439e-08 au
q 2.632673469937188 1.1978e-07 au
i 3.905677659003683 4.2022e-06 deg
node 98.77507434969969 6.7488e-05 deg
peri 279.4323426596655 7.0571e-05 deg
M 187.6397314143967 2.1391e-05 deg
tp 2458478.916577110280
(2018-Dec-26.41657711)
0.00011051 JED
period 1834.703382367057
5.02
1.3548e-05
3.709e-08
d
yr
n .1962170035003387 1.449e-09 deg/d
Q 3.233320589382166 1.5918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1940  
   data-arc span      41061 days (112.42 yr)  
   first obs. used      1903-11-14  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49694  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:31:29  

Additional Information
 Earth MOID = 1.63689 au 
 Jupiter MOID = 2.22757 au 
 T_jup = 3.264 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.7 mag n/a MPO365255  
diameter diameter 43.47 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 31.06 h n/a LCDB (Rev. 2016-February); 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 Bul. 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. (2015) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.0647   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11

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

Alternate Designations
 1923 PF = 1937 NB1 = 1950 CJ = 1950 EY = A903 UD = A908 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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