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15904 Halstead (1997 SD11)
Classification: Main-belt Asteroid          SPK-ID: 2015904
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02610047572491518 4.6109e-08  
a 2.163236085387407 6.4498e-09 au
q 2.106774594453492 9.8265e-08 au
i 3.046766734514015 2.969e-06 deg
node 242.1089274734105 9.0045e-05 deg
peri 269.7686182707309 0.00010805 deg
M 127.4627893590771 6.0224e-05 deg
tp 2458189.032798687209
(2018-Mar-11.53279869)
0.00019398 TDB
period 1162.128910072027
3.18
5.1974e-06
1.423e-08
d
yr
n .3097763052617697 1.3854e-09 deg/d
Q 2.219697576321321 6.6181e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      14502 days (39.70 yr)  
   first obs. used      1980-03-23  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48154  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:05:13  

Additional Information
 Earth MOID = 1.11879 au 
 Jupiter MOID = 2.75694 au 
 T_jup = 3.693 
[ 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 14.2   n/a MPO384891  
diameter diameter 3.812 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15904 Halstead           Discovered 1997 Sept. 29 by T. Stafford at the Zeno Observatory.
Susan Ruth Halstead (b. 1959) is the sister of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

Alternate Designations
 1997 SD11 = 1980 FB6 = 1981 QU4 = 1998 YF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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