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JPL Small-Body Database Browser
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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741570789833162 6.8891e-08  
a 2.601995370790364 1.1503e-08 au
q 2.148839457485404 1.7593e-07 au
i 13.65616032702601 6.6404e-06 deg
node 12.5967509850199 1.7183e-05 deg
peri 25.59614374946371 2.3669e-05 deg
M 133.2155471673837 1.3074e-05 deg
tp 2458433.202828257558
(2018-Nov-10.70282826)
5.5846e-05 TDB
period 1533.05666020101
4.20
1.0166e-05
2.783e-08
d
yr
n .2348249802801143 1.5572e-09 deg/d
Q 3.055151284095325 1.3506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      8133 days (22.27 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:17:29  

Additional Information
 Earth MOID = 1.16228 au 
 Jupiter MOID = 2.43037 au 
 T_jup = 3.353 
[ 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 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

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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
1915-May-29 00:49 00:01 Juno 0.0208115091298371 0.0207904066703484 0.0208326135894702 7.58567264057441 7.58567256351098 2420646.533994335 1.43269570981013 1100.22739231722 46.9130580888705 17.0319578501765 19618.092690779 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 17:17:44 2020-Feb-23 17:17
2140-Oct-22 00:04 00:03 Eunom 0.037855994494793 0.0378163029835904 0.0378956951103857 6.16686734513185 6.16686728500138 2502973.502673081 3.11502668686725 2184.35745913889 29.1566338457465 -25.0690481872381 82291.9765697889 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 17:17:44 2020-Feb-23 17:17
2167-Feb-02 04:05 00:04 Hebe 0.010996153076598 0.0109577840500417 0.0110345221736031 7.30405936181494 7.30405928441289 2512572.669858520 4.25914833943762 1913.45253545084 43.6170654846373 -1.31420005079993 1217.65276446626 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 17:17:44 2020-Feb-23 17:17

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