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2974 Holden (1955 QK)
Classification: Main-belt Asteroid          SPK-ID: 2002974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404487807975348 1.7452e-08  
a 2.31221083160363 6.5264e-09 au
q 1.987463639358046 4.0072e-08 au
i 6.423959652733896 8.7965e-07 deg
node 214.9246548791196 2.3349e-06 deg
peri 130.6963844279277 7.7071e-06 deg
M 193.3951638310128 6.3456e-06 deg
tp 2459794.825927701481
(2022-Aug-03.32592770)
2.3462e-05 TDB
period 1284.220427764271
3.52
5.4372e-06
1.489e-08
d
yr
n .2803257075008005 1.1869e-09 deg/d
Q 2.636958023849214 7.443e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2198  
   data-arc span      26046 days (71.31 yr)  
   first obs. used      1949-11-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:39:06  

Additional Information
 Earth MOID = .986189 au 
 Jupiter MOID = 2.78544 au 
 T_jup = 3.562 
[ 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 13.30   n/a MPCxxxxx  
diameter diameter 5.944 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 856. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2016) Minor Planet Bull. 43, 52-56.]
geometric albedo albedo 0.288   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2974 Holden (1955 QK)          Discovered 1955-Aug-23 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1955 QK = 1980 TJ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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