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3728 IRAS (1983 QF)
Classification: Main-belt Asteroid          SPK-ID: 2003728
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .213130489639108 4.4613e-08  
a 2.650302438443945 1.7069e-08 AU
q 2.085442182046665 1.2164e-07 AU
i 22.59317230650028 7.3111e-06 deg
node 167.3731358847472 1.3769e-05 deg
peri 281.2303150774442 2.2649e-05 deg
M 47.65720931719759 1.6594e-05 deg
tp 2456791.874357145393
(2014-May-14.37435715)
7.2238e-05 JED
period 1575.946902970588
4.31
1.5224e-05
4.168e-08
d
yr
n .2284340921140278 2.2068e-09 deg/d
Q 3.215162694841225 2.0707e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1106  
   data-arc span      24244 days (66.38 yr)  
   first obs. used      1948-09-07  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49011  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:07:20  

Additional Information
 Earth MOID = 1.22237 AU 
 T_jup = 3.251 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9 mag n/a MPO279554  
diameter diameter 19.55 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 8.323 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2009) Minor Planet Bul. 36, 7-13.]
geometric albedo albedo 0.1161   0.023 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12

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 | Physical Parameters | Discovery Circumstances ]
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