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1337 Gerarda (1934 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2001337
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 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0990445833195049 2.8934e-08  
a 2.911926912556081 1.0516e-08 au
q 2.623516324845111 8.2394e-08 au
i 17.97835318131962 3.322e-06 deg
node 160.2617842510522 1.0741e-05 deg
peri 202.1284237801817 2.0788e-05 deg
M 95.97763891203753 1.7729e-05 deg
tp 2458516.621090277624
(2019-Feb-02.12109028)
8.9469e-05 TDB
period 1814.968668480211
4.97
9.8316e-06
2.692e-08
d
yr
n .1983505314730589 1.0745e-09 deg/d
Q 3.20033750026705 1.1557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3057  
   data-arc span      31269 days (85.61 yr)  
   first obs. used      1934-09-09  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40851  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:22:46  

Additional Information
 Earth MOID = 1.62527 au 
 Jupiter MOID = 2.24421 au 
 T_jup = 3.203 
[ 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 11.2   n/a MPO267712  
diameter diameter 40.875 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.52 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:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.034   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1337 Gerarda (1934 RA1)          Discovered 1934-Sep-09 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1900-Apr-27 16:47 < 00:01 David 0.0320569509683698 0.0320463891797425 0.0320675129107909 5.85819836879768 5.85819828835311 2415137.199070989 0.374379850884777 537.993746782497 30.1097845980661 11.9060518478307 33978.0130174768 T 62 CATAB v2.0f-lin.ifort 2020-May-20 01:22:59 2020-May-20 01:23
2157-Jul-26 11:52 00:02 Juno 0.0375939723226426 0.037583027126567 0.037604920031968 4.07390123855339 4.0739011591174 2509094.994788665 2.07915645437554 730.112548116441 35.8110454963952 -41.7277419991706 104585.191152928 T 62 CATAB v2.0f-lin.ifort 2020-May-20 01:22:59 2020-May-20 01:23

Alternate Designations
 1934 RA1 = 1942 EE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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