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11716 Amahartman (1998 HY79)
Classification: Main-belt Asteroid          SPK-ID: 2011716
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927493416646716 4.1362e-08  
a 2.635744745145188 1.0027e-08 au
q 2.127706680722335 1.125e-07 au
i 2.992429617480415 4.411e-06 deg
node 344.3932369704661 7.0732e-05 deg
peri 338.9450389609361 7.1501e-05 deg
M 331.7610052201225 9.1749e-06 deg
tp 2459123.102741997881
(2020-Sep-30.60274200)
3.979e-05 TDB
period 1562.980108296502
4.28
8.9185e-06
2.442e-08
d
yr
n .2303292268974333 1.3143e-09 deg/d
Q 3.143782809568041 1.1959e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1370  
   data-arc span      10830 days (29.65 yr)  
   first obs. used      1990-12-12  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51734  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:27:00  

Additional Information
 Earth MOID = 1.11581 au 
 Jupiter MOID = 2.18638 au 
 T_jup = 3.369 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456683.5 (2014-Jan-26.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906143404616422 4.1298e-08  
q 2.13468881161918 1.1219e-07 au
tp 2455999.090954360734
(2012-Mar-12.59095436)
4.5696e-05 TDB
node 344.4648614290923 7.0813e-05 deg
peri 339.1688036375062 7.1604e-05 deg
i 2.98996177088797 4.4063e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1370  
   data-arc span      10830 days (29.65 yr)  
   first obs. used      1990-12-12  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51734  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:27:00  

Additional Information
 Jupiter MOID = 2.18638 au 
 T_jup = 3.369 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.705522025544196E-15 -4.622346403172048E-15 4.75152439407669E-13 -1.709881993386033E-14 1.185614094894525E-13 -1.727160563164953E-15
q -4.622346403172048E-15 1.258585770257648E-14 -1.437493530181469E-12 4.52968547184501E-14 -3.489334589547961E-13 4.644781541152696E-15
tp 4.75152439407669E-13 -1.437493530181469E-12 2.088146324229847E-9 -7.298034235910469E-13 4.972775873770183E-10 -5.206470418337252E-13
node -1.709881993386033E-14 4.52968547184501E-14 -7.298034235910469E-13 5.014443400645681E-9 -5.007003094399804E-9 -8.429462174339791E-12
peri 1.185614094894525E-13 -3.489334589547961E-13 4.972775873770183E-10 -5.007003094399804E-9 5.127156407801109E-9 8.328904577250851E-12
i -1.727160563164953E-15 4.644781541152696E-15 -5.206470418337252E-13 -8.429462174339791E-12 8.328904577250851E-12 1.941541730320451E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO384860  
rotation period rot_per 2.53 h n/a LCDB (Rev. 2019-August); 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.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

11716 Amahartman           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Amanda Nicole Hartman (b. 1987) is a finalist in the 2002 Intel International Science and Engineering Fair for her microbiology project. She attends the China Spring High School, China Spring, Texas, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 HY79 = 1995 WT25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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