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JPL Small-Body Database Browser
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46558 (1991 GY5)
Classification: Main-belt Asteroid          SPK-ID: 2046558
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 .135932467313662 4.3612e-08  
a 2.244153339932736 8.884e-09 au
q 1.939100039405484 9.6723e-08 au
i 6.452059701375261 4.8148e-06 deg
node 203.0103749967668 3.8654e-05 deg
peri 352.2631652759501 4.1933e-05 deg
M 245.3836015959157 1.7979e-05 deg
tp 2459391.450232826000
(2021-Jun-25.95023283)
6.2212e-05 TDB
period 1227.94020556438
3.36
7.2916e-06
1.996e-08
d
yr
n .2931738845007835 1.7409e-09 deg/d
Q 2.549206640459988 1.0092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      10521 days (28.80 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:23  

Additional Information
 Earth MOID = .93785 au 
 Jupiter MOID = 2.40935 au 
 T_jup = 3.612 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456839.5 (2014-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357661325004335 4.3698e-08  
q 1.939416971932239 9.6855e-08 au
tp 2456935.736660752748
(2014-Oct-05.23666075)
5.7971e-05 TDB
node 203.0322877663722 3.8645e-05 deg
peri 352.2644632612199 4.1917e-05 deg
i 6.45240080695219 4.8155e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      10521 days (28.80 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:23  

Additional Information
 Jupiter MOID = 2.40935 au 
 T_jup = 3.612 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.90949704980673E-15 -4.219384447326261E-15 5.99302115451674E-13 9.295375934044241E-15 1.321484534671541E-13 1.598544187561214E-15
q -4.219384447326261E-15 9.38093648891975E-15 -1.264000784323382E-12 -2.060637147522555E-14 -2.783540570412175E-13 -3.392013234140907E-15
tp 5.99302115451674E-13 -1.264000784323382E-12 3.360651257781439E-9 -1.118798996551238E-12 9.569065484787293E-10 -2.062682092067668E-12
node 9.295375934044241E-15 -2.060637147522555E-14 -1.118798996551238E-12 1.493419643657982E-9 -1.483586498699892E-9 3.074519635325686E-11
peri 1.321484534671541E-13 -2.783540570412175E-13 9.569065484787293E-10 -1.483586498699892E-9 1.757036560863877E-9 -3.114688858881266E-11
i 1.598544187561214E-15 -3.392013234140907E-15 -2.062682092067668E-12 3.074519635325686E-11 -3.114688858881266E-11 2.318881339615875E-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 16.1   n/a MPO449295  
rotation period rot_per 6.333 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

46558 (1991 GY5)          Discovered 1991-Apr-08 by Elst, E. W. at La Silla
Reference: 20020921/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
1925-Jan-18 06:36 < 00:01 Eunom 0.0335434317908826 0.0335331034087248 0.033553761022968 7.0057911135631 7.00579105382806 2424168.774912460 0.43105809314227 579.950607935154 39.4072543096609 27.4724957922965 59220.1771909159 T 19 CATAB v2.0f-lin.ifort 2020-Feb-23 08:30:38 2020-Feb-23 08:30

Alternate Designations
 1991 GY5 = 1999 TX56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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