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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006405806310831 4.3193e-08  
a 2.932398908062688 1.5705e-08 AU
q 2.637280579313305 1.2827e-07 AU
i 3.910751700896726 4.6241e-06 deg
node 98.92237207705482 7.3536e-05 deg
peri 278.2220116312245 7.7006e-05 deg
M 71.25798528713841 2.2765e-05 deg
tp 2456637.452008084022
(2013-Dec-10.95200808)
0.00011568 JED
period 1834.142188599628
5.02
1.4734e-05
4.034e-08
d
yr
n .1962770401540466 1.5768e-09 deg/d
Q 3.227517236812071 1.7285e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1438  
   data-arc span      40461 days (110.78 yr)  
   first obs. used      1903-11-14  
   last obs. used      2014-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53713  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:37:13  

Additional Information
 Earth MOID = 1.6424 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. 2014-Mar-01) 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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