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18977 (2000 QK217)
Classification: Main-belt Asteroid          SPK-ID: 2018977
[ 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1957693890410517 2.5556e-08  
a 2.61267838361984 1.3904e-08 au
q 2.101195932697821 7.202e-08 au
i 14.14818291874348 7.7041e-07 deg
node 42.86766728430125 2.9854e-06 deg
peri 278.6067787822802 4.0253e-06 deg
M 2.733299532629782 4.445e-06 deg
tp 2459188.788511903431
(2020-Dec-05.28851190)		 1.8986e-05 TDB
period 1542.507750955594
4.22		 1.2314e-05
3.371e-08		 d
yr
n .2333861854353584 1.8631e-09 deg/d
Q 3.124160834541858 1.6626e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1996  
   data-arc span      24059 days (65.87 yr)  
   first obs. used      1955-01-29  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:43:28  

Additional Information
 Earth MOID = 1.14338 au 
 Jupiter MOID = 2.37355 au 
 T_jup = 3.339 
[ 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 12.89   n/a E2021B10  
diameter diameter 6.875 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18977 (2000 QK217)          Discovered 2000-Aug-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 QK217 = 1987 UB10 = 1987 VT1 = 1991 RG26 = 1998 FS93 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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