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1285 Julietta (1933 QF)
Classification: Main-belt Asteroid          SPK-ID: 2001285
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05323375511344262 4.441e-08  
a 2.990983917656296 1.3774e-08 au
q 2.831762612235535 1.3242e-07 au
i 5.693876565981085 4.5787e-06 deg
node 317.8900751862533 4.3704e-05 deg
peri 70.48739339326185 6.0943e-05 deg
M 154.3911823843906 4.2234e-05 deg
tp 2457790.211759590822
(2017-Feb-05.71175959)
0.00022044 TDB
period 1889.380999887959
5.17
1.3051e-05
3.573e-08
d
yr
n .1905385943975028 1.3162e-09 deg/d
Q 3.150205223077057 1.4507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2246  
   data-arc span      31309 days (85.72 yr)  
   first obs. used      1933-08-21  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44553  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:21:12  

Additional Information
 Earth MOID = 1.84129 au 
 Jupiter MOID = 2.12025 au 
 T_jup = 3.246 
[ 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 10.8   n/a MPO435708  
diameter diameter 42.430 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20.3 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.058   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1285 Julietta (1933 QF)          Discovered 1933-Aug-21 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1933 QF = 1928 SR = 1933 RB = 1941 BW = 1951 CM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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