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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402961279502195 4.1781e-08  
a 2.312478368051817 7.2248e-09 au
q 1.988046607045504 9.6193e-08 au
i 6.423488983859021 4.6566e-06 deg
node 214.9329357753932 2.9908e-05 deg
peri 130.6704780533182 3.2761e-05 deg
M 137.3624949382773 1.4064e-05 deg
tp 2458510.404612992730
(2019-Jan-26.90461299)
4.9507e-05 TDB
period 1284.443322042864
3.52
6.0194e-06
1.648e-08
d
yr
n .2802770615268816 1.3135e-09 deg/d
Q 2.636910129058129 8.2384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      25713 days (70.40 yr)  
   first obs. used      1949-11-30  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:48:05  

Additional Information
 Earth MOID = .98852 au 
 Jupiter MOID = 2.78542 au 
 T_jup = 3.562 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO412189  
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. 2019-August); 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

[ show close-approach data ]
Alternate Designations
 1955 QK = 1980 TJ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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