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783 Nora (A914 FB)
Classification: Main-belt Asteroid          SPK-ID: 2000783
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 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2297278785641569 3.0604e-08  
a 2.342855655690355 6.3293e-09 au
q 1.804636396126573 7.1451e-08 au
i 9.341045710622417 3.7799e-06 deg
node 142.0864169620251 2.4214e-05 deg
peri 154.7004726110167 2.589e-05 deg
M 136.944793435201 1.0444e-05 deg
tp 2458502.235724933689
3.7353e-05 TDB
period 1309.835405379964
n .2748436929719191 1.1138e-09 deg/d
Q 2.881074915254137 7.7834e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2856  
   data-arc span      39607 days (108.44 yr)  
   first obs. used      1911-08-28  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:37:08  

Additional Information
 Earth MOID = .793909 au 
 Jupiter MOID = 2.3705 au 
 T_jup = 3.510 
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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 11.1   n/a MPO347519  
diameter diameter 38.719 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 55.53 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:
[Polakis, T. (2018) Minor Planet Bull. 45, 269-273.]
geometric albedo albedo 0.034   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B C   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)

783 Nora (A914 FB)          Discovered 1914-Mar-18 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2070-May-27 17:55 < 00:01 David 0.014056351528114 0.0140526473828314 0.0140600556858671 5.69479833973693 5.69479815101079 2477259.246299084 0.613245520445379 185.857070901395 35.6574748895981 6.7015814324583 13168.5972186169 T 77 CATAB v2.0f-lin.ifort 2020-Feb-22 15:37:26 2020-Feb-22 15:37

Alternate Designations
 A914 FB = A911 QG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jul-03 11:27 UT
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