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1374 Isora (1935 UA)
Classification: Mars-crossing Asteroid          SPK-ID: 2001374
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2774677689356048 3.8897e-08  
a 2.250797398412842 4.8712e-09 au
q 1.626273665949167 8.706e-08 au
i 5.295840749912375 3.7047e-06 deg
node 302.4767862290402 4.4493e-05 deg
peri 61.03801182877184 4.4855e-05 deg
M 35.28664503326152 6.2392e-06 deg
tp 2458879.604286827045
(2020-Jan-31.10428683)
2.1226e-05 TDB
period 1233.397414269313
3.38
4.004e-06
1.096e-08
d
yr
n .2918767267022938 9.4753e-10 deg/d
Q 2.875321130876517 6.2229e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2045  
   data-arc span      30758 days (84.21 yr)  
   first obs. used      1935-10-21  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:53:08  

Additional Information
 Earth MOID = .63188 au 
 Jupiter MOID = 2.61202 au 
 T_jup = 3.570 
[ 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 13.3   n/a MPO492766  
rotation period rot_per 36.699 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:
[Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.]
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1374 Isora (1935 UA)          Discovered 1935-Oct-21 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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