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JPL Small-Body Database Browser
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408 Fama (A917 RB)
Classification: Main-belt Asteroid          SPK-ID: 2000408
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449967332092573 4.2833e-08  
a 3.166308401700162 1.3925e-08 au
q 2.707204027120614 1.3844e-07 au
i 9.086256572735758 4.4543e-06 deg
node 297.1321771070698 3.0662e-05 deg
peri 108.6018901074213 3.4525e-05 deg
M 33.92604808084712 1.4848e-05 deg
tp 2458806.563738571938
(2019-Nov-19.06373857)
8.4889e-05 TDB
period 2057.918857738026
5.63
1.3576e-05
3.717e-08
d
yr
n .1749340109530344 1.154e-09 deg/d
Q 3.62541277627971 1.5944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      41491 days (113.60 yr)  
   first obs. used      1906-09-12  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:04:55  

Additional Information
 Earth MOID = 1.73449 au 
 Jupiter MOID = 1.81854 au 
 T_jup = 3.168 
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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 9.3   n/a MPO421629  
diameter diameter 35.620 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 202.1 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2008) Minor Planet Bull. 35, 21-22.]
geometric albedo albedo 0.221   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

408 Fama (A917 RB)          Discovered 1895-Oct-13 by Wolf, M. at Heidelberg
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
1973-Jan-23 06:58 < 00:01 Jupiter 1.92930470326956 1.92930422025259 1.92930518628654 4.09661132361563 3.98800256639033 2441705.790064967 0.871893853230633 75.6680688438548 21.2548538087229 87.8824662213751 3303927.21866808 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
1983-Oct-19 06:09 < 00:01 Jupiter 1.88943726564831 1.88943680053498 1.88943773076163 3.16088640261867 3.01572806717483 2445626.756596887 0.67745820803202 68.4854633870571 16.8930836226852 79.5490906766104 2849272.54266673 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
1994-Jun-23 03:50 < 00:01 Jupiter 1.97407797761235 1.97407743481773 1.97407852040697 2.25766351423595 2.05885881048309 2449526.659816544 0.507624661006012 50.0963899626651 21.0528821983866 71.234101423704 2544940.88922731 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
2080-Apr-15 01:58 00:01 Jupiter 1.96952702594988 1.96952644847744 1.96952760342232 4.30928182338718 4.20829918029286 2480869.582289413 1.16072378196442 77.8480443772568 25.7607452172098 86.536766415748 3024883.59007471 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
2091-Jan-11 06:08 00:01 Jupiter 1.86021849168699 1.86021804983833 1.86021893353565 3.52661311262775 3.39504493675769 2484792.755694028 1.36468306024493 102.014517388462 17.7630860721062 86.3741903178401 3015945.82793283 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
2101-Sep-30 16:20 00:02 Jupiter 1.91829104107259 1.91829046907597 1.91829161306975 2.61736364779519 2.44284492161086 2488707.180514846 1.69146783254984 94.8829645410621 18.7908884813184 69.702388091043 2412980.87800243 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05
2198-Apr-06 07:36 00:03 Jupiter 1.86196563848911 1.86196494928921 1.8619663276908 3.79930225106846 3.67761909182122 2523958.816780423 3.31945118161803 156.94005723184 23.0343177091876 -84.5884451276786 2897767.8452848 T 39 CATAB v2.0f-lin.ifort 2020-May-20 01:05:09 2020-May-20 01:05

Alternate Designations
 A917 RB = 1940 TG = A895 TC = A906 RC = A908 AB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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