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4450 Pan (1987 SY)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 240 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5865808194911768 1.9912e-08  
a 1.44212842870841 2.7525e-09 au
q .5962035531851076 2.8183e-08 au
i 5.520632213602751 3.476e-06 deg
node 311.8023461557812 2.0484e-05 deg
peri 291.8283914621293 1.9818e-05 deg
M 115.5387235514528 8.4305e-06 deg
tp 2458997.484405780176
(2020-May-27.98440578)
1.4236e-05 TDB
period 632.5637991542247
1.73
1.811e-06
4.958e-09
d
yr
n .5691125550993297 1.6294e-09 deg/d
Q 2.288053304231712 4.3671e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1313  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      30649 days (83.91 yr)  
   first obs. used      1937-02-06  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43543  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:21:42  

Additional Information
 Earth MOID = .0285307 au 
 Jupiter MOID = 2.76716 au 
 T_jup = 4.457 
[ 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 17.16   n/a E2021B10  
rotation period rot_per 56.48 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]

4450 Pan (1987 SY)          Discovered 1987-Sep-25 by Shoemaker, C. and E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 SY = 1937 CA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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