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100006 (1987 DA7)
Classification: Mars-crossing Asteroid          SPK-ID: 2100006
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3048357329108333 5.0145e-08  
a 2.03960728500755 5.407e-09 au
q 1.417862103431998 1.0134e-07 au
i 4.218413935380952 4.0658e-06 deg
node 309.6662911856767 3.5788e-05 deg
peri 210.8667843515534 3.6056e-05 deg
M 215.4525554040719 5.0573e-06 deg
tp 2459627.695014977969
(2022-Feb-17.19501498)
1.4996e-05 TDB
period 1063.942747808363
2.91
4.2308e-06
1.158e-08
d
yr
n .3383640715081437 1.3455e-09 deg/d
Q 2.661352466583101 7.0552e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      12335 days (33.77 yr)  
   first obs. used      1987-02-28  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:07  

Additional Information
 Earth MOID = .428881 au 
 Jupiter MOID = 2.33327 au 
 T_jup = 3.740 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457426.5 (2016-Feb-08.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3042452315890291 5.008e-08  
q 1.419359907642306 1.0122e-07 au
tp 2457498.948403394609
(2016-Apr-20.44840339)
1.6659e-05 TDB
node 309.7037366057224 3.5798e-05 deg
peri 210.8352240478179 3.6068e-05 deg
i 4.21726404152424 4.064e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      12335 days (33.77 yr)  
   first obs. used      1987-02-28  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:07  

Additional Information
 Jupiter MOID = 2.33327 au 
 T_jup = 3.740 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.508007196759575E-15 -5.066055596221324E-15 -5.425696968545649E-13 -1.328892529520949E-14 -7.941912090078109E-14 -9.029267056801054E-15
q -5.066055596221324E-15 1.024636032856364E-14 1.079501698034828E-12 2.632711790878713E-14 1.559370601981284E-13 1.817238082148018E-14
tp -5.425696968545649E-13 1.079501698034828E-12 2.775343946938189E-10 4.159051896565096E-12 7.384485921056411E-11 2.903835741994247E-12
node -1.328892529520949E-14 2.632711790878713E-14 4.159051896565096E-12 1.28149227202636E-9 -1.276369166076596E-9 3.04747674720422E-11
peri -7.941912090078109E-14 1.559370601981284E-13 7.384485921056411E-11 -1.276369166076596E-9 1.300911644071636E-9 -2.97462997551273E-11
i -9.029267056801054E-15 1.817238082148018E-14 2.903835741994247E-12 3.04747674720422E-11 -2.97462997551273E-11 1.651575756908315E-11

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 15.85   n/a E2021B55  
rotation period rot_per 3.9422 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]

100006 (1987 DA7)          Discovered 1987-Feb-28 by Debehogne, H. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1987 DA7 = 2000 VJ39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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