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JPL Small-Body Database Browser
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3728 IRAS (1983 QF)
Classification: Main-belt Asteroid          SPK-ID: 2003728
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2125305073090021 2.8736e-08  
a 2.649583114851963 1.0034e-08 au
q 2.086465871295109 7.5727e-08 au
i 22.59450758665728 5.1381e-06 deg
node 167.3660004209603 8.482e-06 deg
peri 280.9630658649212 1.5254e-05 deg
M 53.56981827299205 1.1801e-05 deg
tp 2458366.086607371322
(2018-Sep-04.58660737)
5.1511e-05 TDB
period 1575.305350417248
4.31
8.9489e-06
2.45e-08
d
yr
n .2285271232682906 1.2982e-09 deg/d
Q 3.212700358408816 1.2167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2168  
   data-arc span      25812 days (70.67 yr)  
   first obs. used      1948-09-07  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 23:50:11  

Additional Information
 Earth MOID = 1.22409 au 
 Jupiter MOID = 2.24852 au 
 T_jup = 3.251 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.0   n/a MPO384786  
diameter diameter 23.450 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.323 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2009) Minor Planet Bull. 36, 7-13.]
geometric albedo albedo 0.086   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3728 IRAS (1983 QF)          Discovered 1983-Aug-23 by IRAS
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1983 QF = 1948 RN = 1963 FA = 1972 FH = 1976 GL = 1985 GT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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