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853 Nansenia (A916 GN)
Classification: Main-belt Asteroid          SPK-ID: 2000853
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053901858304004 3.4956e-08  
a 2.312619912496854 5.9671e-09 au
q 2.068892470163726 8.1002e-08 au
i 9.214128835800373 4.2602e-06 deg
node 182.8397530592011 2.0883e-05 deg
peri 59.71995589369392 2.8053e-05 deg
M 189.4863047292195 1.8745e-05 deg
tp 2459608.931350163657
(2022-Jan-29.43135016)
6.7259e-05 TDB
period 1284.561253048223
3.52
4.9717e-06
1.361e-08
d
yr
n .2802513302855208 1.0847e-09 deg/d
Q 2.556347354829982 6.596e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      36339 days (99.49 yr)  
   first obs. used      1920-07-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:42:34  

Additional Information
 Earth MOID = 1.07478 au 
 Jupiter MOID = 2.4586 au 
 T_jup = 3.559 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456224.5 (2012-Oct-24.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1059418970595845 3.517e-08  
q 2.067207149782707 8.1557e-08 au
tp 2455753.742562305643
(2011-Jul-11.24256231)
6.5648e-05 TDB
node 182.9772926901881 2.0868e-05 deg
peri 59.18105672855959 2.792e-05 deg
i 9.217522767915689 4.2631e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      36339 days (99.49 yr)  
   first obs. used      1920-07-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:42:34  

Additional Information
 Jupiter MOID = 2.4586 au 
 T_jup = 3.559 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.236953014807932E-15 -2.862211526771492E-15 -7.153866268897946E-13 2.500290174950516E-15 -2.168381536390775E-13 -5.097163577763811E-17
q -2.862211526771492E-15 6.651495269568479E-15 1.644617177545924E-12 -5.78973357164429E-15 5.002410219393373E-13 3.396553212001202E-16
tp -7.153866268897946E-13 1.644617177545924E-12 4.309640592979612E-9 -6.400366697461129E-12 1.226953396807893E-9 -3.441339755406343E-13
node 2.500290174950516E-15 -5.78973357164429E-15 -6.400366697461129E-12 4.354684488378651E-10 -4.3084031026375E-10 1.330277061965864E-11
peri -2.168381536390775E-13 5.002410219393373E-13 1.226953396807893E-9 -4.3084031026375E-10 7.795228459824784E-10 -1.323684245086294E-11
i -5.097163577763811E-17 3.396553212001202E-16 -3.441339755406343E-13 1.330277061965864E-11 -1.323684245086294E-11 1.817377402109936E-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 11.6   n/a MPO502161  
diameter diameter 27.593 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.931 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.710   0.069 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.88, mean=12.02, max.=16.16) deg.
U-B UB 0.290   0.080 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.88 deg.
Tholen spectral type spec_T XD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

853 Nansenia (A916 GN)          Discovered 1916-Apr-02 by Belyavskij, S. at Simeis
Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 GN = 1930 FY = 1930 GJ = 1952 SR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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