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46569 (1991 SY1)
Classification: Main-belt Asteroid          SPK-ID: 2046569
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .216827925213609 3.3533e-08  
a 2.383748697783034 9.1842e-09 au
q 1.866885413412097 8.3026e-08 au
i 9.306823033198633 4.5426e-06 deg
node 345.3281918207627 2.1034e-05 deg
peri 297.2995407669581 2.3436e-05 deg
M 74.54283874663372 1.019e-05 deg
tp 2459118.149146776420
(2020-Sep-25.64914678)
3.7691e-05 TDB
period 1344.278120411857
3.68
7.7689e-06
2.127e-08
d
yr
n .2678017253525661 1.5477e-09 deg/d
Q 2.900611982153972 1.1176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      10608 days (29.04 yr)  
   first obs. used      1991-08-07  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:24:19  

Additional Information
 Earth MOID = .87214 au 
 Jupiter MOID = 2.33831 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457136.5 (2015-Apr-24.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171893612427163 3.3629e-08  
q 1.866427632430061 8.3228e-08 au
tp 2457772.437207830536
(2017-Jan-18.93720783)
3.6763e-05 TDB
node 345.373156532415 2.1049e-05 deg
peri 297.2107313107435 2.3427e-05 deg
i 9.304430677506982 4.5399e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1086  
   data-arc span      10608 days (29.04 yr)  
   first obs. used      1991-08-07  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:24:19  

Additional Information
 Jupiter MOID = 2.33831 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.130916514850408E-15 -2.790089915841029E-15 1.269556622629715E-13 6.819861266823968E-15 7.33192505031593E-14 -1.476522921010488E-15
q -2.790089915841029E-15 6.926818109074932E-15 -2.996926716680035E-13 -1.697190156092451E-14 -1.818632290361068E-13 4.165637718147644E-15
tp 1.269556622629715E-13 -2.996926716680035E-13 1.351521017586928E-9 4.336901534552614E-13 3.828679482569592E-10 5.718066330816058E-12
node 6.819861266823968E-15 -1.697190156092451E-14 4.336901534552614E-13 4.430633617010082E-10 -4.365397625275158E-10 7.865207460989356E-12
peri 7.33192505031593E-14 -1.818632290361068E-13 3.828679482569592E-10 -4.365397625275158E-10 5.488389093082637E-10 -6.342539620717591E-12
i -1.476522921010488E-15 4.165637718147644E-15 5.718066330816058E-12 7.865207460989356E-12 -6.342539620717591E-12 2.061044345582097E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO468329  

46569 (1991 SY1)          Discovered 1991-Sep-16 by Holt, H. E. at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 SY1 = 1991 PS20 = 1999 XA220 = 2001 CM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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