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1335 Demoulina (1934 RE)
Classification: Main-belt Asteroid          SPK-ID: 2001335
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544449221419271 6.9112e-09  
a 2.240783326186643 3.8792e-09 au
q 1.894705719836819 1.5261e-08 au
i 2.547730407248014 3.0119e-07 deg
node 172.5939086920529 6.5449e-06 deg
peri 198.6930129117985 1.1638e-05 deg
M 306.2018146956817 6.7989e-06 deg
tp 2459579.589462165157
(2021-Dec-31.08946217)
2.3286e-05 TDB
period 1225.175273229257
3.35
3.1815e-06
8.71e-09
d
yr
n .2938355089807923 7.6303e-10 deg/d
Q 2.586860932536468 4.4784e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3367  
   data-arc span      31748 days (86.92 yr)  
   first obs. used      1934-09-07  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:33:44  

Additional Information
 Earth MOID = .893855 au 
 Jupiter MOID = 2.87799 au 
 T_jup = 3.618 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456989.5 (2014-Nov-28.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1541187370249095 6.9432e-09  
q 1.895254022241409 1.5324e-08 au
tp 2457128.796989388454
(2015-Apr-16.29698939)
2.223e-05 TDB
node 172.6227128170416 6.5471e-06 deg
peri 198.4441428468759 1.1661e-05 deg
i 2.545926398751999 3.0144e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3367  
   data-arc span      31748 days (86.92 yr)  
   first obs. used      1934-09-07  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:33:44  

Additional Information
 Jupiter MOID = 2.87799 au 
 T_jup = 3.618 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.820847750002395E-17 -1.039611621234721E-16 -5.129879902204908E-14 5.801560005037222E-15 -2.273216419216499E-14 -6.942802260711392E-16
q -1.039611621234721E-16 2.348358801848928E-16 1.18457866067713E-13 -1.369589318846155E-14 5.265887850564893E-14 1.577823605113933E-15
tp -5.129879902204908E-14 1.18457866067713E-13 4.941541641833465E-10 -7.342500613810063E-11 2.292142930528274E-10 3.086652622688291E-12
node 5.801560005037222E-15 -1.369589318846155E-14 -7.342500613810063E-11 4.286450190291372E-11 -6.459758461352848E-11 -8.325657475098046E-13
peri -2.273216419216499E-14 5.265887850564893E-14 2.292142930528274E-10 -6.459758461352848E-11 1.359847141229884E-10 1.796904049188223E-12
i -6.942802260711392E-16 1.577823605113933E-15 3.086652622688291E-12 -8.325657475098046E-13 1.796904049188223E-12 9.086495887157257E-14

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.95   n/a MPO636081  
diameter diameter 7.484 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 74.86 h n/a LCDB (Rev. 2020-October); 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:
[Molnar, L.A.; Haegert, M.J. (2007) Minor Planet Bull. 34, 126-128.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.218   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1335 Demoulina (1934 RE)          Discovered 1934-Sep-07 by Reinmuth, K. at Heidelberg
Independent discovery Sept. 13 by E. Delporte, Uccle, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1934 RE = 1954 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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