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1221 Amor (1932 EA1)
Classification: Amor [NEO]          SPK-ID: 2001221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4354878764754467 3.4494e-08  
a 1.919165520995622 9.6786e-10 au
q 1.083392203652344 6.6577e-08 au
i 11.88044396129922 4.9805e-06 deg
node 171.3164868446693 2.2657e-05 deg
peri 26.67758290479227 2.4475e-05 deg
M 112.6648636168215 8.1193e-06 deg
tp 2458896.584345836670
(2020-Feb-17.08434584)
2.185e-05 TDB
period 971.1069803528634
2.66
7.3461e-07
2.011e-09
d
yr
n .3707109590224443 2.8043e-10 deg/d
Q 2.7549388383389 1.3894e-09 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      32328 days (88.51 yr)  
   first obs. used      1932-03-12  
   last obs. used      2020-09-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45742  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:09:47  

Additional Information
 Earth MOID = .106469 au 
 Jupiter MOID = 2.21262 au 
 T_jup = 3.781 
[ 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 17.39   n/a E2021B10  
diameter diameter 1.0 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)

1221 Amor (1932 EA1)          Discovered 1932-Mar-12 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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