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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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 
[ 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 11.1   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

[ hide close-approach data ]
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 ]
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