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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 ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053901938904275 3.3992e-08  
a 2.31261991284761 5.8317e-09 au
q 2.068892451837737 7.8967e-08 au
i 9.214128252446118 4.0787e-06 deg
node 182.8397535309729 2.0699e-05 deg
peri 59.7199541149869 2.7503e-05 deg
M 189.4863056964176 1.8417e-05 deg
tp 2459608.931346850898
(2022-Jan-29.43134685)
6.6187e-05 TDB
period 1284.561253340468
3.52
4.8589e-06
1.33e-08
d
yr
n .2802513302217621 1.0601e-09 deg/d
Q 2.556347373857483 6.4463e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2958  
   data-arc span      36637 days (100.31 yr)  
   first obs. used      1920-07-11  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:05  

Additional Information
 Earth MOID = 1.07478 au 
 Jupiter MOID = 2.4586 au 
 T_jup = 3.559 
[ 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 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-Mar-05 08:30 < 00:01 Juno 0.0492759798213229 0.0492706197203459 0.0492813404247298 7.23385881373077 7.23385877960042 2422022.854197411 0.148317280644597 366.103177754298 35.2103062653047 -43.3694547569621 144463.54052812 T 41 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:12 2020-Nov-13 04:25
2151-May-11 05:21 < 00:01 Iris 0.0207378157757101 0.0207337313371083 0.0207419057633161 7.22580854076659 7.22580850240261 2506826.723229955 0.699353780385411 578.603756189723 31.9503273443665 -69.6129803962401 91017.4965455595 T 41 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:12 2020-Nov-13 04:25

Alternate Designations
 A916 GN = 1930 FY = 1930 GJ = 1952 SR 
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