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74502 (1999 DG2)
Classification: Main-belt Asteroid          SPK-ID: 2074502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1740276065906501 6.951e-08  
a 2.602734112414361 1.1648e-08 au
q 2.14978652423905 1.7783e-07 au
i 13.65427316768928 7.0125e-06 deg
node 12.60630818243304 1.7827e-05 deg
peri 25.68617155253579 2.4325e-05 deg
M 39.21555267612618 1.3273e-05 deg
tp 2458433.429807756654
(2018-Nov-10.92980776)
5.6652e-05 TDB
period 1533.709589772532
4.20
1.0296e-05
2.819e-08
d
yr
n .2347250107847291 1.5757e-09 deg/d
Q 3.055681700589672 1.3676e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1997-10-29  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48367  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:48:12  

Additional Information
 Earth MOID = 1.16264 au 
 Jupiter MOID = 2.42731 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456659.5 (2014-Jan-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718593895627982 6.912e-08  
q 2.156089351864662 1.7632e-07 au
tp 2456898.006412856837
(2014-Aug-28.50641286)
6.0203e-05 TDB
node 12.65295111013074 1.7848e-05 deg
peri 25.4124379642186 2.4522e-05 deg
i 13.64383029634842 7.0053e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1997-10-29  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48367  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:48:12  

Additional Information
 Jupiter MOID = 2.42731 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.777561361966375E-15 -1.217125829279839E-14 -1.940598795028302E-12 3.988586387584481E-14 -6.572664409398021E-13 -1.848079479124167E-14
q -1.217125829279839E-14 3.108957259979572E-14 4.876979027299292E-12 -1.013044484015739E-13 1.653744293291093E-12 4.765132571607863E-14
tp -1.940598795028302E-12 4.876979027299292E-12 3.624461128745433E-9 -1.41405794887905E-11 1.016332751049244E-9 5.047707974924845E-12
node 3.988586387584481E-14 -1.013044484015739E-13 -1.41405794887905E-11 3.185673880686739E-10 -3.136960757232303E-10 1.017181362277662E-11
peri -6.572664409398021E-13 1.653744293291093E-12 1.016332751049244E-9 -3.136960757232303E-10 6.013328335453448E-10 -8.314864222832613E-12
i -1.848079479124167E-14 4.765132571607863E-14 5.047707974924845E-12 1.017181362277662E-11 -8.314864222832613E-12 4.907393120741357E-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 13.9   n/a MPO379109  

74502 (1999 DG2)          Discovered 1999-Feb-19 by Kobayashi, T. at Oizumi
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 DG2 = 2001 QP25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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