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4963 Kanroku (1977 DR1)
Classification: Main-belt Asteroid          SPK-ID: 2004963
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646475510574094 1.5013e-08  
a 2.599247909501921 1.0748e-08 au
q 2.171288106611339 3.932e-08 au
i 11.78134944522644 6.7976e-07 deg
node 332.3666980066087 1.4508e-06 deg
peri 302.7643830150968 7.6129e-06 deg
M 54.12290434098701 5.9941e-06 deg
tp 2458970.383068237606
(2020-Apr-30.88306824)
2.5284e-05 TDB
period 1530.629156789832
4.19
9.4935e-06
2.599e-08
d
yr
n .2351974012797607 1.4588e-09 deg/d
Q 3.027207712392504 1.2517e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2920  
   data-arc span      17460 days (47.80 yr)  
   first obs. used      1973-04-02  
   last obs. used      2021-01-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41001  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:59:28  

Additional Information
 Earth MOID = 1.17872 au 
 Jupiter MOID = 2.23596 au 
 T_jup = 3.367 
[ 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 11.99   n/a E2021B10  
diameter diameter 11.306 km 0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.616 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Marchini, A.; Palmas, T.; Franco, L/ Papini, R.; Salvaggio, F. (2017) Minor Planet Bull. 44, 66-67.]
[Sokova, I.A.; Marchini, A.; Franco, L.; Papini, R.; et al. (2018) Planet. Space Sci. 153, 11-21.]
geometric albedo albedo 0.152   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4963 Kanroku (1977 DR1)          Discovered 1977-Feb-18 by Kosai and Hurukawa at Kiso
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 DR1 = 1973 GE1 = 1974 RC = 1981 CG = 1987 QU3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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