Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

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

[ show close-approach data ]
Alternate Designations
 A913 QD = 1941 SL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-24 10:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin