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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07909258696895639 3.4292e-08  
a 3.896907376436833 2.4317e-08 au
q 3.588690890856035 1.3059e-07 au
i 4.172908815275948 3.8556e-06 deg
node 236.9267667014712 5.1467e-05 deg
peri 101.2141078060793 5.6592e-05 deg
M 133.4668435280038 2.3648e-05 deg
tp 2457958.783745450646
(2017-Jul-24.28374545)
0.00018238 TDB
period 2809.820339829059
7.69
2.6301e-05
7.201e-08
d
yr
n .1281220706167645 1.1993e-09 deg/d
Q 4.205123862017632 2.6241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      33047 days (90.48 yr)  
   first obs. used      1930-05-25  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:25  

Additional Information
 Earth MOID = 2.58315 au 
 Jupiter MOID = 1.15986 au 
 T_jup = 3.056 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456479.5 (2013-Jul-06.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07752373974914864 3.4333e-08  
q 3.588622368888621 1.3026e-07 au
tp 2455162.073440783922
(2009-Nov-26.57344078)
0.00018258 TDB
node 236.960791590417 5.1457e-05 deg
peri 102.013608042838 5.6787e-05 deg
i 4.174625872753905 3.8577e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      33047 days (90.48 yr)  
   first obs. used      1930-05-25  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:25  

Additional Information
 Jupiter MOID = 1.15986 au 
 T_jup = 3.056 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.1787431231569E-15 -4.410621688161638E-15 4.662014825575775E-13 6.169101022408459E-15 6.545319416915096E-14 1.761692488967599E-16
q -4.410621688161638E-15 1.696861079137947E-14 -1.673238776032108E-12 8.248030808238681E-16 -2.280060731897711E-13 1.455028175182279E-15
tp 4.662014825575775E-13 -1.673238776032108E-12 3.333554073914882E-8 -5.552939019661332E-11 4.426631697638804E-9 3.524920808507025E-12
node 6.169101022408459E-15 8.248030808238681E-16 -5.552939019661332E-11 2.647851609746768E-9 -2.644689863531906E-9 -9.354269522555389E-12
peri 6.545319416915096E-14 -2.280060731897711E-13 4.426631697638804E-9 -2.644689863531906E-9 3.2247317785874E-9 1.010500617645234E-11
i 1.761692488967599E-16 1.455028175182279E-15 3.524920808507025E-12 -9.354269522555389E-12 1.010500617645234E-11 1.488185323745313E-11

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 9.7   n/a MPO502165 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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