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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004748554753758 4.3189e-08  
a 2.931078354083962 1.6012e-08 AU
q 2.636578680070373 1.2846e-07 AU
i 3.91114402990957 4.6252e-06 deg
node 98.92102883347502 7.3582e-05 deg
peri 277.9914744019649 7.7066e-05 deg
M 32.21328582543637 2.2796e-05 deg
tp 2456636.489333113227
(2013-Dec-09.98933311)
0.00011591 JED
period 1832.903367858733
5.02
1.502e-05
4.112e-08
d
yr
n .1964096996671273 1.6095e-09 deg/d
Q 3.225578028097551 1.7621e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1435  
   data-arc span      40229 days (110.14 yr)  
   first obs. used      1903-11-14  
   last obs. used      2014-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53765  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:57:28  

Additional Information
 Earth MOID = 1.64033 AU 
 T_jup = 3.265 
[ 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 10.6 mag n/a MPO263353  
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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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.]
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 (024)
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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