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1256 Normannia (1932 PD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07938978119091977 1.9692e-08  
a 3.89626279406431 2.0689e-08 au
q 3.586939343381223 7.9505e-08 au
i 4.172685251709689 7.5479e-07 deg
node 236.8990675195622 9.1573e-06 deg
peri 101.4324927296638 1.485e-05 deg
M 183.975773263042 9.9144e-06 deg
tp 2460770.038171751519
(2025-Apr-04.53817175)
7.9428e-05 TDB
period 2809.123215575684
7.69
2.2374e-05
6.126e-08
d
yr
n .1281538659478929 1.0207e-09 deg/d
Q 4.205586244747398 2.2331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3571  
   data-arc span      33284 days (91.13 yr)  
   first obs. used      1930-05-25  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41651  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:29:33  

Additional Information
 Earth MOID = 2.58065 au 
 Jupiter MOID = 1.15956 au 
 T_jup = 3.056 
[ 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 9.73   n/a MPCxxxxx IRAS observations used: 11
diameter diameter 68.245 km 0.526 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 488.063 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 0.052   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.737   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=6.61, mean=8.41, max.=10.18) deg.
U-B UB 0.239   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=6.61, mean=8.41, max.=10.18) deg.
Tholen spectral type spec_T D   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1256 Normannia (1932 PD)          Discovered 1932-Aug-08 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 PD = 1930 KO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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