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120463 (1991 GQ4)
Classification: Main-belt Asteroid          SPK-ID: 2120463
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379590491773152 3.1954e-08  
a 2.160824943742198 7.4209e-09 au
q 1.862719589064898 6.7928e-08 au
i 1.677800947113099 3.5952e-06 deg
node 219.5592852217448 0.00016142 deg
peri .9013231179920528 0.00016238 deg
M 109.3702965896854 1.915e-05 deg
tp 2458848.027943239242
(2019-Dec-30.52794324)
6.1039e-05 TDB
period 1160.186489298043
3.18
5.9766e-06
1.636e-08
d
yr
n .3102949425120557 1.5985e-09 deg/d
Q 2.458930298419497 8.4446e-09 au
  Orbit Determination Parameters
   # obs. used (total)      681  
   data-arc span      10833 days (29.66 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54242  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:06:34  

Additional Information
 Earth MOID = .853414 au 
 Jupiter MOID = 2.51264 au 
 T_jup = 3.684 
[ 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 16.57   n/a E2021B55  
diameter diameter 2.596 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120463 (1991 GQ4)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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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
1995-Apr-07 15:20 < 00:01 Hebe 0.0292390597579127 0.0292371509224129 0.0292409686013687 8.10906992640652 8.1090699001871 2449815.138929581 0.212669830507241 98.7226885714047 38.126562966339 16.7490527224305 53778.15051038 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 17:06:36 2021-Apr-13 17:06
2109-Dec-11 01:41 < 00:01 Juno 0.0407584286789609 0.040754205764565 0.0407626560145476 8.05807942649184 8.05807938944962 2491700.570297176 0.171952849706257 711.632198374686 36.9106118436884 73.034854191199 157982.954634361 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 17:06:36 2021-Apr-13 17:06

Alternate Designations
 1991 GQ4 = 2001 QU35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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