Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
821 Fanny (A916 GH)
Classification: Main-belt Asteroid          SPK-ID: 2000821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

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.

Note: If the applet is not working, here are some notes that might help.
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2123005712718636 3.3828e-08  
a 2.771795219542949 8.813e-09 au
q 2.18334151098536 9.3593e-08 au
i 5.398941909371398 4.2386e-06 deg
node 209.7564230363388 3.3677e-05 deg
peri 32.86200236422739 3.4773e-05 deg
M 150.4145284664826 9.5814e-06 deg
tp 2458296.249077084553
(2018-Jun-26.74907708)
4.3769e-05 TDB
period 1685.544174717511
4.61
8.0388e-06
2.201e-08
d
yr
n .2135808751855075 1.0186e-09 deg/d
Q 3.360248928100537 1.0684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3158  
   data-arc span      37928 days (103.84 yr)  
   first obs. used      1916-04-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44988  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:37:55  

Additional Information
 Earth MOID = 1.1731 au 
 Jupiter MOID = 1.6627 au 
 T_jup = 3.297 
[ 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 11.8   n/a MPO502161  
diameter diameter 28.856 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 236.6 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2018) Minor Planet Bull. 45, 356-359.]
[Polakis, T. (2018) Minor Planet Bull. 45, 347-352.]
geometric albedo albedo 0.025   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.706   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.47 deg.
U-B UB 0.321   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.47 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 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)

821 Fanny (A916 GH)          Discovered 1916-Mar-31 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
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
1904-May-31 11:21 00:02 Jupiter 1.87300490944688 1.87300378763096 1.87300603126323 2.26545305605051 2.05616742603731 2416631.972942572 1.70289394097287 91.3531235916568 20.0768300124229 -75.2032717647624 2054593.48361783 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
1965-Apr-08 13:02 < 00:01 Jupiter 1.69633320210876 1.69633278402929 1.69633362018881 1.69988313427011 1.37511874479869 2438859.043120683 0.737783722059651 147.89361038188 47.0337819384414 -64.6668481480597 3532597.51120971 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
1987-Nov-24 10:26 < 00:01 Jupiter 1.75276859014312 1.75276821873471 1.75276896155132 1.99105387625573 1.73141527466396 2447123.934660525 0.390000288310822 51.636477899353 33.2757343097127 -61.0929970663625 2182709.70276998 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
2048-Sep-26 21:30 < 00:01 Jupiter 1.78565563459961 1.78565527716131 1.78565599203802 1.67228670402134 1.35935515711102 2469346.395497432 0.541510951739838 130.488826573786 40.2774174032274 -65.1594067870577 3610734.96200843 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
2071-May-14 18:59 < 00:01 Jupiter 1.6753429689641 1.67534254756023 1.67534339036778 1.82071928963241 1.51784571246036 2477611.291118518 0.880041511523888 97.7903489093992 46.5155538535597 -62.589680528176 1916242.40594354 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
2132-Mar-25 05:57 00:02 Jupiter 1.928003432292 1.92800213564893 1.92800472893397 1.80382708459866 1.54114880958864 2499840.748215280 1.89236595283098 76.0684557969632 29.588080449539 -77.2732247758945 1415604.38748814 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
2154-Oct-31 05:59 00:02 Jupiter 1.66698565392793 1.66698534660766 1.66698596124906 1.70006221731196 1.3689335348722 2508095.749385939 2.09325718109413 182.915561709513 90.2549010645731 -86.5367543467306 1759604.04992781 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38
2177-Jun-11 06:52 00:03 Jupiter 1.85997697103407 1.85997523741827 1.85997870465156 2.30406539939261 2.09712402812532 2516354.786225766 2.60787023637822 140.11328517709 18.9845047579808 -74.8937806381866 1955166.72704243 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:38:08 2020-Feb-22 15:38

Alternate Designations
 A916 GH = 1930 HC = 1930 HO = 1930 HT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-11 14:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin