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3648 Raffinetti (1957 HK)
Classification: Main-belt Asteroid          SPK-ID: 2003648
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106958248352409 1.4735e-08  
a 2.415021730983541 7.4769e-09 au
q 2.156715236904539 3.6052e-08 au
i 7.901424321533016 6.2489e-07 deg
node 208.9817007964207 4.4607e-06 deg
peri 33.87942555680721 1.015e-05 deg
M 317.3264809053843 1.1336e-05 deg
tp 2459362.993483565122
(2021-May-28.49348357)
4.3544e-05 TDB
period 1370.818608930353
3.75
6.366e-06
1.743e-08
d
yr
n .2626168025840467 1.2196e-09 deg/d
Q 2.673328225062543 8.2766e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2630  
   data-arc span      24839 days (68.01 yr)  
   first obs. used      1953-03-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:08:20  

Additional Information
 Earth MOID = 1.14813 au 
 Jupiter MOID = 2.32954 au 
 T_jup = 3.496 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1074919322722763 1.4732e-08  
q 2.15579518741515 3.6088e-08 au
tp 2456621.597076113623
(2013-Nov-25.09707611)
3.858e-05 TDB
node 209.0163784752275 4.4626e-06 deg
peri 34.02993692028081 1.0123e-05 deg
i 7.898526584007961 6.2466e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2630  
   data-arc span      24839 days (68.01 yr)  
   first obs. used      1953-03-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:08:20  

Additional Information
 Jupiter MOID = 2.32954 au 
 T_jup = 3.496 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.17027002044308E-16 -5.225755125364337E-16 4.200758542566168E-13 1.518656909366253E-14 7.890861117633136E-14 3.672520997229172E-15
q -5.225755125364337E-16 1.302328655996751E-15 -9.535156303517108E-13 -3.694998075358258E-14 -1.723460251631062E-13 -8.749196437172994E-15
tp 4.200758542566168E-13 -9.535156303517108E-13 1.488413165566788E-9 -1.067935771476905E-11 3.507755089661305E-10 1.167184417029614E-12
node 1.518656909366253E-14 -3.694998075358258E-14 -1.067935771476905E-11 1.991520038655439E-11 -2.201270143331886E-11 1.95804760986077E-12
peri 7.890861117633136E-14 -1.723460251631062E-13 3.507755089661305E-10 -2.201270143331886E-11 1.024701655308949E-10 -1.711227651856055E-12
i 3.672520997229172E-15 -8.749196437172994E-15 1.167184417029614E-12 1.95804760986077E-12 -1.711227651856055E-12 3.902041770822325E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.12   n/a E2021B10  
diameter diameter 5.314 km 0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.609   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3648 Raffinetti (1957 HK)          Discovered 1957-Apr-24 by at La Plata
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1957 HK = 1953 FE1 = 1972 GG = 1983 CW2 = 1983 EJ1 = 1987 HM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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