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3898 Curlewis (1981 SF9)
Classification: Main-belt Asteroid          SPK-ID: 2003898
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1576613810112536 5.9593e-08  
a 3.113932317805813 2.3934e-08 AU
q 2.622985448204975 1.8825e-07 AU
i .6475067733541724 7.0383e-06 deg
node 183.8639089587706 0.0004244 deg
peri 212.965700705526 0.00042489 deg
M 342.7357298691859 1.8206e-05 deg
tp 2457096.751587697715
(2015-Mar-15.25158770)
0.00010175 JED
period 2007.068431426554
5.50
2.314e-05
6.335e-08
d
yr
n .179366081576065 2.068e-09 deg/d
Q 3.604879187406651 2.7708e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      21895 days (59.95 yr)  
   first obs. used      1954-10-22  
   last obs. used      2014-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50198  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:59:21  

Additional Information
 Earth MOID = 1.62991 AU 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO298988  

3898 Curlewis           Discovered 1981 Sept. 26 by M. P. Candy at the Perth Observatory.
Named in honor of Harold Burnham Curlewis (1874-1960), government astronomer for Western Australia during 1912-1940 and second director of the Perth Observatory. Because of severe funding cuts, he was sometimes the observatory's only employee, but he managed to keep the observatory operational during the severe years of the depression. His 38 years of continuous service remain the longest of any employee of the Perth Observatory. Name suggested and citation provided by J. Biggs and P. Birch.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

[ show close-approach data ]
Alternate Designations
 1981 SF9 = 1954 UW = 1976 SE6 = 1976 UJ2 = 1987 UE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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