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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 80 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4353210351202446 4.5951e-08  
a 1.91941566321919 1.2314e-09 au
q 1.083853649880602 8.8738e-08 au
i 11.87652956555689 6.091e-06 deg
node 171.3372302802219 2.7955e-05 deg
peri 26.6748196824311 2.9815e-05 deg
M 250.2803094387659 9.6056e-06 deg
tp 2458896.528859494821
(2020-Feb-17.02885949)
2.6032e-05 TDB
period 971.2968462908569
2.66
9.3473e-07
2.559e-09
d
yr
n .3706384936538724 3.5668e-10 deg/d
Q 2.754977676557778 1.7675e-09 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      31628 days (86.59 yr)  
   first obs. used      1932-03-12  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45599  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-16 07:15:44  

Additional Information
 Earth MOID = .107716 au 
 Jupiter MOID = 2.21482 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 17.7   n/a PDS3 (MPC 17261)  
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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