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2305 King (1980 RJ1)
Classification: Main-belt Asteroid          SPK-ID: 2002305
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03141907116270466 3.7951e-08  
a 2.785252773659601 1.2146e-08 au
q 2.69774271855787 1.0627e-07 au
i 7.458545795488316 4.2119e-06 deg
node 25.25284288497129 3.1213e-05 deg
peri 358.2373764893972 7.4502e-05 deg
M 164.4937544573889 6.8636e-05 deg
tp 2458224.713420496176
0.00032257 TDB
period 1697.834483398111
n .2120348028740011 1.387e-09 deg/d
Q 2.872762828761333 1.2528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      33082 days (90.57 yr)  
   first obs. used      1929-10-01  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4399  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:37:55  

Additional Information
 Earth MOID = 1.70052 au 
 Jupiter MOID = 2.25533 au 
 T_jup = 3.318 
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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 11.6   n/a MPO502175  
diameter diameter 12.684 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 3.0368 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Odden, C.E.; Abruzzese, Z.N.; Beckwith, R.M.; Chandran, R.J.; et al. (2019) Minor Planet Bull. 46, 363-364.]
geometric albedo albedo 0.209   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2305 King           Discovered 1980 Sept. 12 at the Harvard College Observatory's Agassiz Station.
Named in memory of Martin Luther King (1929-1968), the American civil rights leader who worked to bring about social, political and economic equality for blacks by peaceful means. A Baptist minister who received the 1964 Nobel peace prize, he preached 'non-violent resistance' to achieve full civil rights for all.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 6208Last Updated: 2006-03-21

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Alternate Designations
 1980 RJ1 = 1929 TM = 1931 AJ = 1934 VM = 1941 FO = 1952 SB = 1955 HE = 1966 RE = 1969 FB = 1971 TT = 1976 YK6 = 1978 EY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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