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JPL Small-Body Database Browser
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760 Massinga (A913 QD)
Classification: Main-belt Asteroid          SPK-ID: 2000760
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2330159150544155 3.7992e-08  
a 3.148104568854912 1.3052e-08 au
q 2.414546102056198 1.2022e-07 au
i 12.53434695028984 4.2152e-06 deg
node 331.552142771692 2.1185e-05 deg
peri 200.7028230557516 2.3195e-05 deg
M 105.9677192421767 1.0982e-05 deg
tp 2457999.958205135894
(2017-Sep-03.45820514)
6.0975e-05 TDB
period 2040.197219466333
5.59
1.2688e-05
3.474e-08
d
yr
n .1764535293770116 1.0973e-09 deg/d
Q 3.881663035653626 1.6093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2392  
   data-arc span      38816 days (106.27 yr)  
   first obs. used      1913-08-28  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:48:22  

Additional Information
 Earth MOID = 1.42586 au 
 Jupiter MOID = 1.15389 au 
 T_jup = 3.130 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455397.5 (2010-Jul-20.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2303615037581355 3.823e-08  
q 2.424342782407954 1.2048e-07 au
tp 2455957.130227261705
(2012-Jan-30.63022726)
5.9033e-05 TDB
node 331.6915186714822 2.1175e-05 deg
peri 200.7512243109845 2.3213e-05 deg
i 12.53138123262192 4.2143e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2392  
   data-arc span      38816 days (106.27 yr)  
   first obs. used      1913-08-28  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:48:22  

Additional Information
 Jupiter MOID = 1.15389 au 
 T_jup = 3.130 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.46156865514035E-15 -4.590351239750029E-15 -1.959678418566929E-13 -1.171511281770634E-14 2.125545958901135E-14 1.392582246929856E-15
q -4.590351239750029E-15 1.451529011767677E-14 6.671899660978366E-13 3.384793417284785E-14 -6.184053661186795E-14 -2.96290886861118E-15
tp -1.959678418566929E-13 6.671899660978366E-13 3.484930801047984E-9 -3.894468830157969E-12 5.922592366548045E-10 2.742458262289416E-12
node -1.171511281770634E-14 3.384793417284785E-14 -3.894468830157969E-12 4.483683093205833E-10 -4.375292454042618E-10 8.964531671419008E-13
peri 2.125545958901135E-14 -6.184053661186795E-14 5.922592366548045E-10 -4.375292454042618E-10 5.388452629650738E-10 -3.016864410991398E-13
i 1.392582246929856E-15 -2.96290886861118E-15 2.742458262289416E-12 8.964531671419008E-13 -3.016864410991398E-13 1.776021320866403E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.9   n/a MPO502160 IRAS observations used: 9
diameter diameter 71.29 km 1.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 10.72 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Koff, R.A. (2000) Minor Planet Bull. 27, 26-27.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2276   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
B-V BV 0.947   0.054 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.56, mean=7.77, max.=8.98) deg.
U-B UB 0.557   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.56, mean=7.77, max.=8.98) deg.
Tholen spectral type spec_T SU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

760 Massinga (A913 QD)          Discovered 1913-Aug-28 by Kaiser, F. at Heidelberg
Independent discovery earlier the same night by G. Neujmin, Simeis.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A913 QD = 1941 SL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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