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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 ]

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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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3838129847870548 1.9215e-08  
a 2.60419637374587 1.031e-08 au
q 1.604671990566843 4.7391e-08 au
i 27.79965726585336 3.1453e-07 deg
node 219.3452912131498 1.8358e-06 deg
peri 110.2727313954295 2.9601e-06 deg
M 222.6899046975954 7.8779e-06 deg
tp 2459785.975854902488
(2022-Jul-25.47585490)
3.65e-05 TDB
period 1535.002268410812
4.20
9.1158e-06
2.496e-08
d
yr
n .234527340713775 1.3928e-09 deg/d
Q 3.603720756924897 1.4267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2047  
   data-arc span      24393 days (66.78 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37128  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 16:31:18  

Additional Information
 Earth MOID = .769152 au 
 Jupiter MOID = 2.53739 au 
 T_jup = 3.154 
[ 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 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

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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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