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4451 Grieve (1988 JJ)
Classification: Mars-crossing Asteroid          SPK-ID: 2004451
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3838129849001056 1.9182e-08  
a 2.604196373610244 1.0294e-08 au
q 1.604671990188866 4.732e-08 au
i 27.79965726674872 3.1453e-07 deg
node 219.3452911483634 1.8353e-06 deg
peri 110.2727314416475 2.9575e-06 deg
M 222.6899048109134 7.8622e-06 deg
tp 2459785.975854373575
(2022-Jul-25.47585437)
3.6427e-05 TDB
period 1535.002268290898
4.20
9.1012e-06
2.492e-08
d
yr
n .2345273407320961 1.3905e-09 deg/d
Q 3.603720757031623 1.4245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2059  
   data-arc span      24409 days (66.83 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37043  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:38:08  

Additional Information
 Earth MOID = .769152 au 
 Jupiter MOID = 2.53739 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457204.5 (2015-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3853656368564505 1.9347e-08  
q 1.600171934477528 4.7829e-08 au
tp 2456714.346748468887
(2014-Feb-25.84674847)
2.3068e-05 TDB
node 219.5218952599154 1.8429e-06 deg
peri 110.0125299083797 2.948e-06 deg
i 27.75251678338128 3.1538e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2059  
   data-arc span      24409 days (66.83 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37043  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:38:08  

Additional Information
 Jupiter MOID = 2.53739 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.743063760077221E-16 -9.190998100359706E-16 3.66887198204514E-13 8.132361118851318E-15 3.264697835956654E-14 2.46183397992078E-16
q -9.190998100359706E-16 2.287573747736947E-15 -8.763183648745753E-13 -1.909525077428026E-14 -7.56020533314913E-14 -7.095611444625155E-16
tp 3.66887198204514E-13 -8.763183648745753E-13 5.321459767806731E-10 1.084309084480558E-11 5.364183730577074E-11 -8.440044076990461E-13
node 8.132361118851318E-15 -1.909525077428026E-14 1.084309084480558E-11 3.396287720563707E-12 -1.901135002673744E-12 -1.546632061314626E-13
peri 3.264697835956654E-14 -7.56020533314913E-14 5.364183730577074E-11 -1.901135002673744E-12 8.690936143700133E-12 -5.458376955573449E-14
i 2.46183397992078E-16 -7.095611444625155E-16 -8.440044076990461E-13 -1.546632061314626E-13 -5.458376955573449E-14 9.946474708477113E-14

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.12   n/a MPCxxxxx  
rotation period rot_per 6.864 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Sheridan, E.E. (2002) Minor Planet Bull. 29, 32-33.]
[Stephens, R.D. (2002) Minor Planet Bull. 29, 34.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
SMASSII spectral type spec_B S   n/a Binzel et al. (2004) Icarus 170, 259-294  

4451 Grieve (1988 JJ)          Discovered 1988-May-09 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 JJ = 1971 GF = 1980 VE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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