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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3836635998248111 3.7888e-08  
a 2.604523566623736 1.1557e-08 au
q 1.605262679224317 9.5329e-08 au
i 27.79664918770369 5.4244e-06 deg
node 219.3571249122836 8.9055e-06 deg
peri 110.2485384815592 1.2186e-05 deg
M 175.8119091180305 1.1737e-05 deg
tp 2458250.715163389529
(2018-May-12.21516339)
4.6355e-05 TDB
period 1535.291565479551
4.20
1.0219e-05
2.798e-08
d
yr
n .2344831484093729 1.5607e-09 deg/d
Q 3.603784454023155 1.5991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      24281 days (66.48 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 19:52:48  

Additional Information
 Earth MOID = .770958 au 
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457067.5 (2015-Feb-14.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3855006692907395 3.8118e-08  
q 1.599649456118913 9.599e-08 au
tp 2456714.389672623394
(2014-Feb-25.88967262)
3.8952e-05 TDB
node 219.5344429764203 8.9248e-06 deg
peri 109.9868601147954 1.2106e-05 deg
i 27.7548831622752 5.4243e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      24281 days (66.48 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 19:52:48  

Additional Information
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.452944813714328E-15 -3.651314036571409E-15 6.491701806489756E-13 1.402554748724443E-15 1.130574056050151E-13 -2.183019876194892E-16
q -3.651314036571409E-15 9.214004919178084E-15 -1.522991652812086E-12 -2.179191875872179E-15 -2.61268515429903E-13 8.129185765491478E-16
tp 6.491701806489756E-13 -1.522991652812086E-12 1.517296334720187E-9 3.31375629705275E-12 3.325581427787475E-10 1.260906488899696E-12
node 1.402554748724443E-15 -2.179191875872179E-15 3.31375629705275E-12 7.965280948972823E-11 -6.939251495378244E-11 5.405580717054592E-12
peri 1.130574056050151E-13 -2.61268515429903E-13 3.325581427787475E-10 -6.939251495378244E-11 1.46550114071058E-10 -4.865135339728636E-12
i -2.183019876194892E-16 8.129185765491478E-16 1.260906488899696E-12 5.405580717054592E-12 -4.865135339728636E-12 2.942284537507881E-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 12.1   n/a MPO502196  
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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