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46616 (1994 AM)
Classification: Main-belt Asteroid          SPK-ID: 2046616
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203100207840344 4.6191e-08  
a 3.125372558432557 2.7836e-08 au
q 2.490608742236397 1.3939e-07 au
i 14.65216874991622 4.9584e-06 deg
node 277.163517384411 2.2098e-05 deg
peri 312.465477581162 2.5938e-05 deg
M 174.6153667012421 1.4713e-05 deg
tp 2458021.616341702241
(2017-Sep-25.11634170)
8.1405e-05 TDB
period 2018.139203006849
5.53
2.6961e-05
7.382e-08
d
yr
n .1783821450292586 2.3831e-09 deg/d
Q 3.760136374628717 3.3489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1397  
   data-arc span      9519 days (26.06 yr)  
   first obs. used      1994-01-02  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:31:41  

Additional Information
 Earth MOID = 1.50481 au 
 Jupiter MOID = 1.46773 au 
 T_jup = 3.133 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457135.5 (2015-Apr-23.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203898362271589 4.596e-08  
q 2.486458596468855 1.3856e-07 au
tp 2458023.407023516772
(2017-Sep-26.90702352)
8.1278e-05 TDB
node 277.2420649438552 2.2112e-05 deg
peri 312.6987386094235 2.5962e-05 deg
i 14.65095044763996 4.9584e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1397  
   data-arc span      9519 days (26.06 yr)  
   first obs. used      1994-01-02  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:31:41  

Additional Information
 Jupiter MOID = 1.46773 au 
 T_jup = 3.133 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.112301865705441E-15 -6.292775331922283E-15 -3.271278770906012E-13 8.91628004493788E-15 -1.355617716885822E-13 1.431031159381591E-15
q -6.292775331922283E-15 1.919856858128726E-14 9.985643282973606E-13 -2.653364626911149E-14 3.708325487409909E-13 -3.121616732853628E-15
tp -3.271278770906012E-13 9.985643282973606E-13 6.606046793644209E-9 3.238753511080961E-12 1.140514291119595E-9 7.614619272689459E-13
node 8.91628004493788E-15 -2.653364626911149E-14 3.238753511080961E-12 4.88937116284787E-10 -4.723991004008086E-10 5.994715176741084E-12
peri -1.355617716885822E-13 3.708325487409909E-13 1.140514291119595E-9 -4.723991004008086E-10 6.740185736934004E-10 -5.897132694408381E-12
i 1.431031159381591E-15 -3.121616732853628E-15 7.614619272689459E-13 5.994715176741084E-12 -5.897132694408381E-12 2.458537744770738E-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 13.1   n/a MPO400454  
diameter diameter 7.567 km 0.468 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.524 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.213   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46616 (1994 AM)          Discovered 1994-Jan-02 by Kobayashi, T. at Oizumi
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 AM = 1998 XV32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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