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7959 Alysecherri (1994 PK)
Classification: Inner Main-belt Asteroid          SPK-ID: 2007959
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08564060545328157 3.5693e-08  
a 1.942670872711409 5.531e-09 au
q 1.776299362975949 6.9319e-08 au
i 19.2641852114318 5.3447e-06 deg
node 235.7786181789446 1.1336e-05 deg
peri 100.5758349086372 3.4465e-05 deg
M 246.0277207991194 3.4425e-05 deg
tp 2459513.607883426472
(2021-Oct-26.10788343)
9.4988e-05 TDB
period 989.0022277685473
2.71
4.2237e-06
1.156e-08
d
yr
n .3640032245551721 1.5545e-09 deg/d
Q 2.109042382446869 6.0047e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      25249 days (69.13 yr)  
   first obs. used      1951-12-01  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:50:12  

Additional Information
 Earth MOID = .858554 au 
 Jupiter MOID = 3.11309 au 
 T_jup = 3.828 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456848.5 (2014-Jul-10.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08543904074846508 3.5664e-08  
q 1.776998119154559 6.923e-08 au
tp 2456545.592647830584
(2013-Sep-10.09264783)
9.2006e-05 TDB
node 235.8269798803995 1.1336e-05 deg
peri 100.3717559016027 3.4561e-05 deg
i 19.2628018638079 5.3445e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      25249 days (69.13 yr)  
   first obs. used      1951-12-01  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:50:12  

Additional Information
 Jupiter MOID = 3.11309 au 
 T_jup = 3.828 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.271924705245745E-15 -2.462433468523505E-15 9.128669466231488E-13 -6.633464949789997E-16 3.148800482956092E-13 5.071956107057242E-15
q -2.462433468523505E-15 4.7927667058329E-15 -1.681053671149651E-12 8.123502598168444E-16 -5.782659496785663E-13 -9.631061045805812E-15
tp 9.128669466231488E-13 -1.681053671149651E-12 8.465071120143601E-9 -4.641466951616751E-12 3.012032739537877E-9 -4.145495487645817E-12
node -6.633464949789997E-16 8.123502598168444E-16 -4.641466951616751E-12 1.285117636643414E-10 -1.219791277349482E-10 -4.919262807403022E-12
peri 3.148800482956092E-13 -5.782659496785663E-13 3.012032739537877E-9 -1.219791277349482E-10 1.194477144059027E-9 3.013580297700212E-12
i 5.071956107057242E-15 -9.631061045805812E-15 -4.145495487645817E-12 -4.919262807403022E-12 3.013580297700212E-12 2.856324150649404E-11

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 14.59   n/a E2021B10  
rotation period rot_per 3.540 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.]

7959 Alysecherri           Discovered 1994 Aug. 2 by C. W. Hergenrother at the Catalina Station.
Alyse Cherri Hergenrother (b. 1984), maiden name Alyse Cherri Smith, is the wife of the discoverer. She has worked for the state of Arizona to prevent the abuse and neglect of Arizona's children.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

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