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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2296706902879481 1.1189e-08  
a 2.342893736462286 5.6377e-09 au
q 1.804799714737683 2.5513e-08 au
i 9.342020436982315 2.9139e-07 deg
node 142.0834549460328 3.5943e-06 deg
peri 154.7645865560412 5.4536e-06 deg
M 245.6849607095996 3.5131e-06 deg
tp 2459812.437601406388
(2022-Aug-20.93760141)
1.3622e-05 TDB
period 1309.867340603483
3.59
4.7279e-06
1.294e-08
d
yr
n .2748369921446705 9.9202e-10 deg/d
Q 2.880987758186889 6.9326e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3574  
   data-arc span      40097 days (109.78 yr)  
   first obs. used      1911-08-28  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37293  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:33:55  

Additional Information
 Earth MOID = .793574 au 
 Jupiter MOID = 2.36944 au 
 T_jup = 3.510 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.16   n/a E2021B10  
diameter diameter 38.719 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 55.53 h n/a LCDB (Rev. 2020-October); 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.]
[Polakis, T. (2020) Minor Planet Bull. 47, 94-101.]
geometric albedo albedo 0.034   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
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

Alternate Designations
 A914 FB = A911 QG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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