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216261 Mapihsia (2006 WJ15)
Classification: Main-belt Asteroid          SPK-ID: 2216261
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2347923717070068 1.0854e-07  
a 2.97228173711428 3.6509e-08 au
q 2.274412658675796 3.2663e-07 au
i 6.297072639554428 7.5401e-06 deg
node 167.0883359770734 5.8167e-05 deg
peri 209.7377946655022 5.9167e-05 deg
M 308.424453221807 1.679e-05 deg
tp 2459468.648101487745
(2021-Sep-11.14810149)
9.0145e-05 TDB
period 1871.687700195241
5.12
3.4485e-05
9.441e-08
d
yr
n .1923397797412716 3.5438e-09 deg/d
Q 3.670150815552764 4.5081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      6867 days (18.80 yr)  
   first obs. used      2000-08-01  
   last obs. used      2019-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52057  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:06  

Additional Information
 Earth MOID = 1.27682 au 
 Jupiter MOID = 1.79889 au 
 T_jup = 3.211 
[ 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 15.76   n/a MPCxxxxx  
diameter diameter 4.451 km 0.894 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.02 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.051   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216261 Mapihsia           Discovered 2006 Nov. 16 by M.-T. Chang and Q.-z. Ye at Lulin.
Pi Hsia Ma (b. 1951), the mother of the first discoverer, inspires him in his astronomical work.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
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