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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2333343511758468 3.7848e-08  
a 3.146396432757358 1.2661e-08 au
q 2.412234062577921 1.1936e-07 au
i 12.53914767021535 4.2062e-06 deg
node 331.5472857708673 2.0738e-05 deg
peri 200.56291401 2.2716e-05 deg
M 176.769242990521 1.1096e-05 deg
tp 2457999.526016721897
(2017-Sep-03.02601672)
6.0505e-05 TDB
period 2038.536952944016
5.58
1.2305e-05
3.369e-08
d
yr
n .1765972402315763 1.066e-09 deg/d
Q 3.880558802936795 1.5616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2522  
   data-arc span      39057 days (106.93 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:21:32  

Additional Information
 Earth MOID = 1.42306 au 
 Jupiter MOID = 1.15312 au 
 T_jup = 3.130 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455511.5 (2010-Nov-11.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2304712887113224 3.8186e-08  
q 2.423972591864333 1.2035e-07 au
tp 2455957.071876458484
(2012-Jan-30.57187646)
5.8423e-05 TDB
node 331.6898164449909 2.0737e-05 deg
peri 200.7564642852 2.274e-05 deg
i 12.5313328895424 4.2039e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2522  
   data-arc span      39057 days (106.93 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:21:32  

Additional Information
 Jupiter MOID = 1.15312 au 
 T_jup = 3.130 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.458199984341741E-15 -4.580279255368071E-15 -2.038365745597186E-13 -1.082634124942524E-14 1.83598482487962E-14 1.311136641099027E-15
q -4.580279255368071E-15 1.448388973645766E-14 7.034994892318675E-13 3.128434884410216E-14 -5.006699674422929E-14 -2.655742659461192E-15
tp -2.038365745597186E-13 7.034994892318675E-13 3.413237534887936E-9 -3.603567892199754E-12 5.746776300744507E-10 2.694115443045355E-12
node -1.082634124942524E-14 3.128434884410216E-14 -3.603567892199754E-12 4.300216214788987E-10 -4.195946295865542E-10 2.01456743781539E-12
peri 1.83598482487962E-14 -5.006699674422929E-14 5.746776300744507E-10 -4.195946295865542E-10 5.170971000452694E-10 -1.405534491817069E-12
i 1.311136641099027E-15 -2.655742659461192E-15 2.694115443045355E-12 2.01456743781539E-12 -1.405534491817069E-12 1.767251005460794E-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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1975-Aug-21 06:38 00:01 Jupiter 1.54774417634523 1.54774258191642 1.5477457707751 2.73742112235304 2.52961443373606 2442645.776532532 1.45666434101383 120.718428038939 66.0623580605471 -40.9124879099514 1916321.32991749 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
1986-Jun-16 06:49 < 00:01 Jupiter 1.15656816072962 1.15656775791146 1.15656856354825 3.156142378591 2.91487868134514 2446597.784336208 0.526990022566117 75.5677688531215 19.6619661156229 83.4651358962827 3004735.15089115 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
1997-Mar-24 04:24 < 00:01 Jupiter 1.70169036311146 1.70168966144995 1.70169106478225 3.15279625529699 2.99075525811062 2450531.683056268 0.434736606171141 301.086934155161 22.6891498523655 84.7573467143838 2872764.90699102 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2082-Mar-14 21:39 00:01 Jupiter 1.40844554292663 1.40844413974906 1.40844694610492 2.88725784718651 2.67085782026871 2481568.402159815 1.33463979902586 99.604299811857 51.5957830968723 -45.6666011343693 1800718.17978674 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2093-Feb-06 20:26 00:01 Jupiter 1.20280280124063 1.20280195066638 1.20280365182076 3.10011902139956 2.86396985709154 2485550.351089913 1.29361646581047 151.032332114922 17.6218345422284 75.2906184870181 3039811.70931465 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2103-Oct-15 07:33 00:02 Jupiter 1.85699616540465 1.85699367589956 1.85699865496178 3.29589785797325 3.15447183210725 2489451.814797861 2.21538169130071 527.463828357491 19.2857353799793 77.0885313137375 2634340.6240016 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2188-Nov-10 01:32 00:03 Jupiter 1.32374098328824 1.32373813292747 1.32374383365901 2.84986016264037 2.61571450722424 2520524.563729154 3.26856947708551 247.093110560449 44.9268522486745 -51.8608475181228 1698402.05912055 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22
2199-Oct-12 01:43 00:03 Jupiter 1.26964493499144 1.26964234863547 1.2696475214014 3.04114779722943 2.81323891027433 2524512.571306642 3.35617860752259 449.892903732411 15.4951373876459 74.2866422843072 2893895.9141211 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:21:58 2020-Aug-24 22:22

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