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118418 Yangmei (1999 TP18)
Classification: Main-belt Asteroid          SPK-ID: 2118418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046649470477253 3.71e-08  
a 3.171769973259587 2.2485e-08 au
q 2.839796836960807 1.275e-07 au
i 8.906543704639265 5.1146e-06 deg
node 208.7750392945882 2.1716e-05 deg
peri 126.4704967747835 3.1896e-05 deg
M 347.0045909034193 2.2932e-05 deg
tp 2459470.979783723665
(2021-Sep-13.47978372)
0.00013147 TDB
period 2063.245715563826
5.65
2.194e-05
6.007e-08
d
yr
n .1744823688639636 1.8554e-09 deg/d
Q 3.503743109558367 2.4839e-08 au
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      10152 days (27.79 yr)  
   first obs. used      1993-09-16  
   last obs. used      2021-07-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:42:12  

Additional Information
 Earth MOID = 1.84168 au 
 Jupiter MOID = 1.925 au 
 T_jup = 3.175 
[ 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 14.75   n/a E2021B55  
diameter diameter 5.488 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.44 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.085   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118418 Yangmei           Discovered 1999 Oct. 14 by Beijing Schmidt CCD Asteroid Program at Xinglong.
Yangmei (the Central Academy of Fine Arts, CAFA) is China's top institution of higher art education and a world-renowned art school. Since its establishment in 1918, CAFA has played a leading role in the development of Chinese art, as well as art education.
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 2018-05-29Last Updated: 2018-09-17

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1978-May-29 09:25 00:01 Jupiter 1.98382490159645 1.98382443957904 1.98382536361409 3.13879836625014 2.99968773082405 2443657.892664002 1.23446642043121 61.3961745179534 19.3033097249658 79.6429053291568 3528889.09373626 T 18 CATAB v2.0g-lin.ifort 2021-Jul-09 00:42:14 2021-Jul-09 00:42
1989-Mar-07 03:18 < 00:01 Jupiter 1.94413893525205 1.9441384906494 1.94413937985469 4.0667473785367 3.95816550680956 2447592.637397978 0.818774050010325 61.4016931975813 19.1170936371789 84.454651575286 3332420.8903244 T 18 CATAB v2.0g-lin.ifort 2021-Jul-09 00:42:14 2021-Jul-09 00:42
1999-Dec-28 02:34 < 00:01 Jupiter 1.99104132207326 1.99104086710765 1.99104177703888 4.82488948518135 4.73589747150562 2451540.606727985 0.475276082468515 42.8230119399282 20.7539325089933 85.1570153151485 3686971.42248428 T 18 CATAB v2.0g-lin.ifort 2021-Jul-09 00:42:14 2021-Jul-09 00:42
2108-Feb-09 05:41 00:03 Jupiter 1.97109440339508 1.97109395195867 1.97109485483171 3.84741793169463 3.73405689042668 2491029.736541282 3.13488380856555 128.687683389941 18.537211369403 83.9296110367117 2490867.5483632 T 18 CATAB v2.0g-lin.ifort 2021-Jul-09 00:42:14 2021-Jul-09 00:42
2118-Nov-28 05:50 00:03 Jupiter 1.98653073320916 1.98653006121257 1.9865314052114 4.7301854325612 4.63916896132991 2494974.742967576 3.38739299041055 233.341322576194 20.9955437202905 -84.9331055113835 3374878.18100358 T 18 CATAB v2.0g-lin.ifort 2021-Jul-09 00:42:14 2021-Jul-09 00:42

Alternate Designations
 1999 TP18 = 2004 RS42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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