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3471 Amelin (1977 QK2)
Classification: Main-belt Asteroid          SPK-ID: 2003471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05148498761099382 4.9487e-08  
a 3.191187368226309 1.9034e-08 au
q 3.026889126108818 1.5598e-07 au
i 15.39041139704559 5.6352e-06 deg
node 334.8360398510544 1.3574e-05 deg
peri 159.2150893814089 4.9257e-05 deg
M 39.14695572841844 4.5185e-05 deg
tp 2458774.076042344907
(2019-Oct-17.57604234)
0.00026161 TDB
period 2082.221292539996
5.70
1.8629e-05
5.1e-08
d
yr
n .1728922863721436 1.5468e-09 deg/d
Q 3.355485610343801 2.0014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2282  
   data-arc span      22704 days (62.16 yr)  
   first obs. used      1958-04-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39585  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:57:51  

Additional Information
 Earth MOID = 2.04341 au 
 Jupiter MOID = 1.66084 au 
 T_jup = 3.139 
[ 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 11.5   n/a MPO458864  
diameter diameter 29.257 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3471 Amelin (1977 QK2)          Discovered 1977-Aug-21 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 QK2 = 1974 DN = 1980 DN2 = 1980 EU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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