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JPL Small-Body Database Browser
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746 Marlu (A913 EJ)
Classification: Main-belt Asteroid          SPK-ID: 2000746
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 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2371599621972983 3.9273e-08  
a 3.110083011646436 1.3425e-08 au
q 2.372495842173907 1.2389e-07 au
i 17.47976759718638 4.9314e-06 deg
node 1.945447946649078 1.2392e-05 deg
peri 306.7367247042797 1.5221e-05 deg
M 348.4791639135369 9.1918e-06 deg
tp 2458664.611788931125
(2019-Jun-30.11178893)
5.1212e-05 TDB
period 2003.34800720967
5.48
1.2972e-05
3.552e-08
d
yr
n .1796991829200061 1.1635e-09 deg/d
Q 3.847670181118964 1.6609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2808  
   data-arc span      38072 days (104.24 yr)  
   first obs. used      1915-09-12  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42522  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:47:55  

Additional Information
 Earth MOID = 1.40304 au 
 Jupiter MOID = 1.73984 au 
 T_jup = 3.106 
[ show covariance matrix ]

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 9.8   n/a MPO502160 IRAS observations used: 14
diameter diameter 74.274 km 1.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.787 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Klinglesmith, D.A.; Dehart, A.; Hanowell, J.; Henderickx, S. (2015) Minor Planet Bull. 42, 101-104.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.032   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.726   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.94 deg.
U-B UB 0.283   0.050 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.94 deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

746 Marlu (A913 EJ)          Discovered 1913-Mar-01 by Kaiser, F. at Heidelberg
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
1967-Aug-28 18:33 < 00:01 Jupiter 1.76145845743311 1.76145783070482 1.761459084162 3.62131294196508 3.48599753186898 2439731.272884698 0.953925005841841 155.401388285385 24.4674034946476 83.1561799558628 2527312.15368992 T 90 CATAB v2.0f-lin.ifort 2019-Dec-13 20:48:15 2019-Dec-13 20:48
2039-Mar-08 08:49 < 00:01 Jupiter 1.72197551608578 1.72197499289995 1.72197603927219 4.00485750410608 3.88009067578983 2465855.867374915 0.573348247865366 115.14466892424 18.8712279339378 82.3520065429967 2637457.56490877 T 90 CATAB v2.0f-lin.ifort 2019-Dec-13 20:48:15 2019-Dec-13 20:48
2110-Sep-08 07:37 00:02 Jupiter 1.72886736173433 1.72886664034124 1.72886808313105 4.26333989861288 4.1468311748224 2491971.817275537 1.83414058719603 162.114775130435 17.4919548551785 79.9502824773666 2451190.74451362 T 90 CATAB v2.0f-lin.ifort 2019-Dec-13 20:48:15 2019-Dec-13 20:48
2182-Mar-09 11:04 00:03 Jupiter 1.79181885400819 1.79181705149166 1.79182065654835 4.45737379456388 4.35002849935683 2518086.960864543 3.13895172191235 358.542825527027 25.2962946610944 76.6044939097585 2514557.38964434 T 90 CATAB v2.0f-lin.ifort 2019-Dec-13 20:48:15 2019-Dec-13 20:48
2192-Jun-03 17:07 00:05 Jupiter 1.88556438539779 1.8855618498365 1.88556692159521 3.05741386438689 2.90677672104128 2521826.213018118 4.68409293096861 1920.0995061967 43.8254001735679 84.7896440544901 2423599.14413524 T 90 CATAB v2.0f-lin.ifort 2019-Dec-13 20:48:15 2019-Dec-13 20:48

Alternate Designations
 A913 EJ = 1926 WA = 1975 XN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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