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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359324672852453 4.3443e-08  
a 2.244153340014125 8.8573e-09 au
q 1.939100039539581 9.639e-08 au
i 6.452059644755578 4.8046e-06 deg
node 203.0103751772792 3.8654e-05 deg
peri 352.2631650858078 4.1928e-05 deg
M 245.3836015618394 1.7942e-05 deg
tp 2459391.450232963501
(2021-Jun-25.95023296)
6.2075e-05 TDB
period 1227.940205631181
3.36
7.2697e-06
1.99e-08
d
yr
n .2931738844848346 1.7357e-09 deg/d
Q 2.549206640488669 1.0061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      10785 days (29.53 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:46:43  

Additional Information
 Earth MOID = .93785 au 
 Jupiter MOID = 2.40935 au 
 T_jup = 3.612 
[ 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 16.1   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 20 CATAB v2.0f-lin.ifort 2020-Nov-12 23:46:45 2020-Nov-12 23:46

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