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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456282.5 (2012-Dec-21.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394663361554056 4.2496e-08  
q 2.72656943521724 1.3619e-07 au
tp 2456743.717109510990
(2014-Mar-27.21710951)
9.1991e-05 TDB
node 297.4485678096015 3.0512e-05 deg
peri 107.8056884423622 3.4855e-05 deg
i 9.106694216463156 4.4612e-06 deg
  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
 Jupiter MOID = 1.81854 au 
 T_jup = 3.168 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.805907651138895E-15 -5.765685086573736E-15 4.439903697133164E-15 -5.730206820063187E-15 3.204946609509263E-15 -2.441744947535096E-15
q -5.765685086573736E-15 1.85487354156342E-14 -2.189722091012123E-13 2.013102815295713E-14 -5.773948292347748E-14 8.979477791478211E-15
tp 4.439903697133164E-15 -2.189722091012123E-13 8.462257055915064E-9 -2.173802493645445E-12 1.587639926367646E-9 -3.709553686081014E-12
node -5.730206820063187E-15 2.013102815295713E-14 -2.173802493645445E-12 9.309876091673941E-10 -9.186657453668063E-10 1.190143564748662E-12
peri 3.204946609509263E-15 -5.773948292347748E-14 1.587639926367646E-9 -9.186657453668063E-10 1.214897034532986E-9 -1.785754956665012E-12
i -2.441744947535096E-15 8.979477791478211E-15 -3.709553686081014E-12 1.190143564748662E-12 -1.785754956665012E-12 1.990249930802505E-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 9.3   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

[ show close-approach data ]
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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