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1806 Derice (1971 LC)
Classification: Main-belt Asteroid          SPK-ID: 2001806
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1071846830731493 1.6455e-08  
a 2.236134762133002 4.4895e-09 au
q 1.996455366344924 3.7144e-08 au
i 3.843627706692339 7.9447e-07 deg
node 271.061822641825 9.3477e-06 deg
peri 193.5414132146085 1.1848e-05 deg
M 125.6497945263273 1.0542e-05 deg
tp 2458970.210467807741
(2020-Apr-30.71046781)
3.5173e-05 TDB
period 1221.364763609366
3.34
3.6782e-06
1.007e-08
d
yr
n .2947522400565507 8.8767e-10 deg/d
Q 2.47581415792108 4.9707e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3147  
   data-arc span      26146 days (71.58 yr)  
   first obs. used      1949-11-25  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43437  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:49:33  

Additional Information
 Earth MOID = 1.01381 au 
 Jupiter MOID = 2.63127 au 
 T_jup = 3.628 
[ 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 12.08   n/a E2021B10  
diameter diameter 7.976 km 0.759 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.2240 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pray, D.P.; Galad, A.; Husark, M.; Oey, J. (2008) Minor Planet Bull. 35, 34-37.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Aznar, A.M. (2017) Minor Planet Bull. 44, 139-141.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 224-230.]
geometric albedo albedo 0.035   0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1806 Derice           Discovered 1971 June 13 at the Perth Observatory.
Named in honor of the wife of Dennis Harwood, member of the astrometric team at the Perth Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 6530Last Updated: 2006-03-21

Alternate Designations
 1971 LC = 1927 EB = 1942 TD = 1949 YD = 1967 EB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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