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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3838129790580839 3.7802e-08  
a 2.604196376839754 1.1555e-08 au
q 1.604672007392619 9.5099e-08 au
i 27.7996546437123 5.3837e-06 deg
node 219.3452991147104 8.8645e-06 deg
peri 110.272722925194 1.2134e-05 deg
M 222.6899015044571 1.1972e-05 deg
tp 2459785.975869561047
(2022-Jul-25.47586956)
5.4126e-05 TDB
period 1535.002271146273
4.20
1.0216e-05
2.797e-08
d
yr
n .2345273402958341 1.5609e-09 deg/d
Q 3.603720746286887 1.599e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      24349 days (66.66 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37154  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:17:59  

Additional Information
 Earth MOID = .769152 au 
 Jupiter MOID = 2.53739 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457100.5 (2015-Mar-19.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3854702798245513 3.8026e-08  
q 1.599767250004121 9.576e-08 au
tp 2456714.382379147686
(2014-Feb-25.88237915)
3.8933e-05 TDB
node 219.5324150727073 8.8847e-06 deg
peri 109.9925479641649 1.2059e-05 deg
i 27.75429797825885 5.3831e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      24349 days (66.66 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37154  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:17:59  

Additional Information
 Jupiter MOID = 2.53739 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.445948855420712E-15 -3.633741375674233E-15 6.526606124712653E-13 1.616782794034339E-15 1.147117732208894E-13 -4.70573805136088E-17
q -3.633741375674233E-15 9.169888396335623E-15 -1.531381625135835E-12 -2.691554500267321E-15 -2.653066880649964E-13 3.042200708134393E-16
tp 6.526606124712653E-13 -1.531381625135835E-12 1.515800347146875E-9 3.545581810800096E-12 3.314942383218573E-10 1.45072850865973E-12
node 1.616782794034339E-15 -2.691554500267321E-15 3.545581810800096E-12 7.893730685989419E-11 -6.870314935057644E-11 4.843088136660671E-12
peri 1.147117732208894E-13 -2.653066880649964E-13 3.314942383218573E-10 -6.870314935057644E-11 1.454220888273674E-10 -4.324301112035567E-12
i -4.70573805136088E-17 3.042200708134393E-16 1.45072850865973E-12 4.843088136660671E-12 -4.324301112035567E-12 2.897777761576378E-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 12.11   n/a E2021B10  
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

[ show close-approach data ]
Alternate Designations
 1988 JJ = 1971 GF = 1980 VE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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