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46722 Ireneadler (1997 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2046722
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02937324032814179 4.3732e-08  
a 3.063818853168226 1.7072e-08 au
q 2.973824565672224 1.3069e-07 au
i 8.832474147239724 4.5464e-06 deg
node 354.9734242216398 2.3925e-05 deg
peri 28.84069965295462 8.0248e-05 deg
M 135.7226491127227 7.4642e-05 deg
tp 2458658.012956164576
(2019-Jun-23.51295616)
0.00040689 TDB
period 1958.813341168649
5.36
1.6372e-05
4.482e-08
d
yr
n .1837847396859265 1.5361e-09 deg/d
Q 3.153813140664227 1.7573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1566  
   data-arc span      8681 days (23.77 yr)  
   first obs. used      1997-09-02  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:48:23  

Additional Information
 Earth MOID = 1.97648 au 
 Jupiter MOID = 1.98122 au 
 T_jup = 3.214 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457570.5 (2016-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02685697055825862 4.3988e-08  
q 2.984356887459589 1.3053e-07 au
tp 2456687.588774540429
(2014-Jan-30.08877454)
0.00044656 TDB
node 355.0307244554805 2.3888e-05 deg
peri 26.85382193443769 8.6584e-05 deg
i 8.838286169041412 4.5483e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1566  
   data-arc span      8681 days (23.77 yr)  
   first obs. used      1997-09-02  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:48:23  

Additional Information
 Jupiter MOID = 1.98122 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.934956754361371E-15 -5.697991295737379E-15 -7.438034003567599E-12 1.031653728684669E-14 -1.426622114188514E-12 -4.556543167565029E-16
q -5.697991295737379E-15 1.703899469544684E-14 2.131270423894968E-11 -3.092521081551695E-14 4.11225809575262E-12 1.608504593796818E-15
tp -7.438034003567599E-12 2.131270423894968E-11 1.994140307120586E-7 -6.537465045491519E-11 3.717169466576259E-8 -1.515548687475173E-11
node 1.031653728684669E-14 -3.092521081551695E-14 -6.537465045491519E-11 5.706443359073925E-10 -5.76179928288502E-10 -6.342275047563174E-12
peri -1.426622114188514E-12 4.11225809575262E-12 3.717169466576259E-8 -5.76179928288502E-10 7.496844475413849E-9 3.494234315060495E-12
i -4.556543167565029E-16 1.608504593796818E-15 -1.515548687475173E-11 -6.342275047563174E-12 3.494234315060495E-12 2.068669423620224E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.85   n/a MPCxxxxx  
diameter diameter 5.889 km 0.395 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 113.71 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.185   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46722 Ireneadler           Discovered 1997 Sept 2 by P. Pravec and L. Šarounová at Ondřejov.
Irene Adler is the heroine of the Sherlock Holmes story A Scandal in Bohemia. She outwitted the great detective, who subsequently called her "The" woman and kept a picture of her over his fireplace. Her great intellect and charm made her the only woman to captivate Holmes.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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