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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07909258685893293 3.4354e-08  
a 3.89690737670525 2.4529e-08 au
q 3.588690891531973 1.3104e-07 au
i 4.17290916381615 3.9593e-06 deg
node 236.9267652411046 5.1588e-05 deg
peri 101.2141088215961 5.6961e-05 deg
M 133.4668438858507 2.4038e-05 deg
tp 2457958.783742550002
(2017-Jul-24.28374255)
0.00018569 TDB
period 2809.820340119367
7.69
2.653e-05
7.264e-08
d
yr
n .1281220706035271 1.2097e-09 deg/d
Q 4.205123861878526 2.6469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2879  
   data-arc span      32840 days (89.91 yr)  
   first obs. used      1930-05-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:21:43  

Additional Information
 Earth MOID = 2.58315 au 
 Jupiter MOID = 1.15986 au 
 T_jup = 3.056 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456356.5 (2013-Mar-05.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07747896965484377 3.4437e-08  
q 3.589124333487734 1.3101e-07 au
tp 2455163.042042174732
(2009-Nov-27.54204217)
0.00018673 TDB
node 236.9618575184751 5.1575e-05 deg
peri 102.140536291988 5.7157e-05 deg
i 4.174637584831043 3.9615e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2879  
   data-arc span      32840 days (89.91 yr)  
   first obs. used      1930-05-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:21:43  

Additional Information
 Jupiter MOID = 1.15986 au 
 T_jup = 3.056 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.185937783554669E-15 -4.448494847507369E-15 5.521763267964235E-13 5.749556767558165E-15 7.756246969874072E-14 2.141133358890806E-16
q -4.448494847507369E-15 1.716249453977194E-14 -2.159747921818373E-12 2.552903973653052E-15 -2.964422803986118E-13 1.365580341397129E-15
tp 5.521763267964235E-13 -2.159747921818373E-12 3.48696698883125E-8 -6.227206778472617E-11 4.641466364374216E-9 3.711893554138483E-12
node 5.749556767558165E-15 2.552903973653052E-15 -6.227206778472617E-11 2.659968776574463E-9 -2.657749015978109E-9 -1.241406152863147E-11
peri 7.756246969874072E-14 -2.964422803986118E-13 4.641466364374216E-9 -2.657749015978109E-9 3.266925587023686E-9 1.319245511903666E-11
i 2.141133358890806E-16 1.365580341397129E-15 3.711893554138483E-12 -1.241406152863147E-11 1.319245511903666E-11 1.569330439296903E-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. 2019-August); 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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