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22769 Aurelianora (1999 BD4)
Classification: Main-belt Asteroid          SPK-ID: 2022769
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334475723145312 3.5052e-08  
a 3.105133139022318 1.8459e-08 au
q 2.69076065990639 1.1377e-07 au
i 3.04915660065639 4.1665e-06 deg
node 6.579277697403255 6.8325e-05 deg
peri 238.4362963096249 7.14e-05 deg
M 247.06714031355 2.4545e-05 deg
tp 2459827.455318491283
(2022-Sep-04.95531849)
0.00013971 TDB
period 1998.56724857152
5.47
1.7821e-05
4.879e-08
d
yr
n .1801290400697353 1.6062e-09 deg/d
Q 3.519505618138246 2.0922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1938  
   data-arc span      15682 days (42.93 yr)  
   first obs. used      1978-04-07  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48691  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:54  

Additional Information
 Earth MOID = 1.67771 au 
 Jupiter MOID = 1.51579 au 
 T_jup = 3.205 
[ 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 13.47   n/a E2021B10  
diameter diameter 10.935 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.172 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.064   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22769 Aurelianora           Discovered 1999 Jan. 19 by S. Sposetti at Gnosca.
Aurelia (b. 1989) and Nora (1991-1991) are daughters of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

[ show close-approach data ]
Alternate Designations
 1999 BD4 = 1978 GW = 2000 EU48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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