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JPL Small-Body Database Browser
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305772 (2009 DF42)
Classification: Main-belt Asteroid          SPK-ID: 2305772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2223765747227289 6.188e-08  
a 2.630327214090655 2.0457e-08 au
q 2.045404057821197 1.6517e-07 au
i 13.19631208513862 5.8205e-06 deg
node 172.266516069893 3.1559e-05 deg
peri 297.0279681204196 3.4404e-05 deg
M 176.0204250653473 1.3751e-05 deg
tp 2457838.642654839607
(2017-Mar-26.14265484)
5.5971e-05 TDB
period 1558.16374239478
4.27
1.8178e-05
4.977e-08
d
yr
n .2310411866256798 2.6953e-09 deg/d
Q 3.215250370360113 2.5006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      286  
   data-arc span      7141 days (19.55 yr)  
   first obs. used      1999-12-16  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53295  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:59  

Additional Information
 Earth MOID = 1.09835 au 
 Jupiter MOID = 2.02587 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456628.5 (2013-Dec-02.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213263628101032 6.168e-08  
q 2.047956511029289 1.6433e-07 au
tp 2456277.940146186756
(2012-Dec-16.44014619)
5.2857e-05 TDB
node 172.4259626548915 3.1516e-05 deg
peri 296.5888228757939 3.4445e-05 deg
i 13.2044287219071 5.8216e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      286  
   data-arc span      7141 days (19.55 yr)  
   first obs. used      1999-12-16  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53295  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:59  

Additional Information
 Jupiter MOID = 2.02587 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.804371450472738E-15 -1.008975180893483E-14 -2.810278951346808E-13 -2.691177657051568E-14 -6.866641404992552E-14 -1.186577509474022E-14
q -1.008975180893483E-14 2.70028958755166E-14 7.735695519185383E-13 7.359111097158878E-14 1.935956622712839E-13 3.309293516005647E-14
tp -2.810278951346808E-13 7.735695519185383E-13 2.793830597415718E-9 -7.074758336610991E-12 7.931292335664917E-10 3.002374857101391E-12
node -2.691177657051568E-14 7.359111097158878E-14 -7.074758336610991E-12 9.932818986932185E-10 -9.683288006778174E-10 -3.686194887484972E-11
peri -6.866641404992552E-14 1.935956622712839E-13 7.931292335664917E-10 -9.683288006778174E-10 1.186463933296559E-9 3.675394439528666E-11
i -1.186577509474022E-14 3.309293516005647E-14 3.002374857101391E-12 -3.686194887484972E-11 3.675394439528666E-11 3.389075177196715E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO450229  

305772 (2009 DF42)          Discovered 2009-Feb-22 by La Sagra at La Sagra
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2009 DF42 = 2003 UW392 = 2007 RN14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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