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18291 Wani (1977 DL4)
Classification: Main-belt Asteroid          SPK-ID: 2018291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2300196297459388 2.8436e-08  
a 2.575443200512124 9.3868e-09 au
q 1.983040709098629 7.252e-08 au
i 4.431051782819796 3.9799e-06 deg
node 355.6044787356206 4.1545e-05 deg
peri 215.0052717375777 4.273e-05 deg
M 183.9202576219127 1.2315e-05 deg
tp 2459938.885712494546
(2022-Dec-25.38571249)
5.443e-05 TDB
period 1509.650416952888
4.13
8.2534e-06
2.26e-08
d
yr
n .2384658037101278 1.3037e-09 deg/d
Q 3.167845691925618 1.1546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      16033 days (43.90 yr)  
   first obs. used      1977-02-18  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53951  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:37:37  

Additional Information
 Earth MOID = .978932 au 
 Jupiter MOID = 1.81087 au 
 T_jup = 3.386 
[ 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 14.34   n/a E2021B10  
diameter diameter 3.597 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.168   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18291 Wani           Discovered 1977 Feb. 18 by H. Kosai and K. Hurukawa at Kiso.
Wani was a scholar who came to Japan from Korea in the second half of the 4th century. He brought ten volumes of The Analects of Confucius and one volume of the Thousand Character Classic to Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-10-05Last Updated: 2017-10-09

[ show close-approach data ]
Alternate Designations
 1977 DL4 = 1995 UV9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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