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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1043150034381382 3.728e-08  
a 3.169192531071815 2.2592e-08 au
q 2.838598201296937 1.2777e-07 au
i 8.90603977862447 5.3671e-06 deg
node 208.8649184746306 2.1822e-05 deg
peri 126.8788598751536 3.2718e-05 deg
M 312.3472642440188 2.4355e-05 deg
tp 2459473.276341546808
(2021-Sep-15.77634155)
0.00013972 TDB
period 2060.731275948314
5.64
2.2035e-05
6.033e-08
d
yr
n .1746952667733613 1.868e-09 deg/d
Q 3.499786860846693 2.4949e-08 au
  Orbit Determination Parameters
   # obs. used (total)      871  
   data-arc span      9802 days (26.84 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:11  

Additional Information
 Earth MOID = 1.83943 au 
 Jupiter MOID = 1.93125 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 1.98382486625957 1.98382439043436 1.983825342085 3.13879815112002 2.9996875031819 2443657.892698612 1.26602848295209 64.4725348023524 19.3163266091129 79.4311302704144 3343600.41404218 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 16:57:14 2021-Apr-13 16:57
1989-Mar-07 03:18 < 00:01 Jupiter 1.94413891030928 1.94413845220833 1.94413936841024 4.06674709277092 3.95816521179237 2447592.637413510 0.835947947637579 63.6229694405951 19.7699649668167 85.3652327412239 3139203.23852878 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 16:57:14 2021-Apr-13 16:57
1999-Dec-28 02:34 < 00:01 Jupiter 1.99104130608789 1.99104083980463 1.99104177237115 4.82488921297903 4.73589719346717 2451540.606731111 0.480637457884127 43.0303528144172 21.3410553708566 85.994256838627 3539749.30859028 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 16:57:14 2021-Apr-13 16:57
2108-Feb-09 05:41 00:03 Jupiter 1.97109436826834 1.97109389193258 1.97109484460444 3.84741791465096 3.73405687081471 2491029.736465495 3.24992927300148 132.996673072331 19.2892715687368 83.3823101400138 2402828.63378981 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 16:57:14 2021-Apr-13 16:57
2118-Nov-28 05:50 00:04 Jupiter 1.98653073122865 1.98653005909994 1.98653140336301 4.73018529726142 4.63916882328403 2494974.742886693 3.51198594424014 241.556583362395 21.7457724367614 -85.2929276786088 3244265.60384713 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 16:57:14 2021-Apr-13 16:57

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