Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741570811382321 6.8464e-08  
a 2.60199536981618 1.1192e-08 au
q 2.148839451073799 1.7454e-07 au
i 13.65615987272271 6.3759e-06 deg
node 12.59674996050233 1.5511e-05 deg
peri 25.59614684531109 2.1971e-05 deg
M 133.2155459592297 1.2753e-05 deg
tp 2458433.202833721063
(2018-Nov-10.70283372)
5.4282e-05 TDB
period 1533.056659340047
4.20
9.8912e-06
2.708e-08
d
yr
n .2348249804119917 1.5151e-09 deg/d
Q 3.05515128855856 1.3141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1596  
   data-arc span      8217 days (22.50 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:00  

Additional Information
 Earth MOID = 1.16228 au 
 Jupiter MOID = 2.43037 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719842250360601 6.8009e-08  
q 2.156482184648478 1.728e-07 au
tp 2456898.572764554207
(2014-Aug-29.07276455)
5.7088e-05 TDB
node 12.63311719207982 1.5525e-05 deg
peri 25.60995168564327 2.218e-05 deg
i 13.64582869330053 6.3709e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1596  
   data-arc span      8217 days (22.50 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:00  

Additional Information
 Jupiter MOID = 2.43037 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.625200379966707E-15 -1.173786663673446E-14 -2.164980016649123E-12 4.405459609060366E-14 -7.345743576840725E-13 -1.332894338083158E-14
q -1.173786663673446E-14 2.985996903998482E-14 5.501516334611825E-12 -1.119332685135348E-13 1.869074450953923E-12 3.349368400896957E-14
tp -2.164980016649123E-12 5.501516334611825E-12 3.258982988861642E-9 -2.139677657463779E-11 9.017515729326308E-10 3.969633907974319E-12
node 4.405459609060366E-14 -1.119332685135348E-13 -2.139677657463779E-11 2.410174550389683E-10 -2.405586644204986E-10 -1.356047510907995E-11
peri -7.345743576840725E-13 1.869074450953923E-12 9.017515729326308E-10 -2.405586644204986E-10 4.919483277707962E-10 1.451770506008635E-11
i -1.332894338083158E-14 3.349368400896957E-14 3.969633907974319E-12 -1.356047510907995E-11 1.451770506008635E-11 4.058783096414922E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 05:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin