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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3836635999072303 3.789e-08  
a 2.604523566618013 1.1557e-08 au
q 1.605262679006127 9.5335e-08 au
i 27.79664918180565 5.4267e-06 deg
node 219.3571249050145 8.9071e-06 deg
peri 110.2485384450384 1.2189e-05 deg
M 175.8119091404705 1.1737e-05 deg
tp 2458250.715163296300
(2018-May-12.21516330)
4.6356e-05 TDB
period 1535.29156547449
4.20
1.0219e-05
2.798e-08
d
yr
n .2344831484101459 1.5607e-09 deg/d
Q 3.603784454229899 1.5991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      24136 days (66.08 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37217  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:51:28  

Additional Information
 Earth MOID = .770958 au 
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457065.5 (2015-Feb-12.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3855023913350073 3.812e-08  
q 1.599642666981689 9.5995e-08 au
tp 2456714.390014608862
(2014-Feb-25.89001461)
3.8955e-05 TDB
node 219.5345515405831 8.9265e-06 deg
peri 109.986519383723 1.2108e-05 deg
i 27.75491848606975 5.4266e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      24136 days (66.08 yr)  
   first obs. used      1954-05-24  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37217  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:51:28  

Additional Information
 Jupiter MOID = 2.5365 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.453115018530179E-15 -3.651751458405673E-15 6.489750926989817E-13 1.400543943504018E-15 1.129794683279859E-13 -2.204822477344266E-16
q -3.651751458405673E-15 9.215127038310952E-15 -1.522520330230012E-12 -2.175080273223042E-15 -2.610781327460725E-13 8.235327214057247E-16
tp 6.489750926989817E-13 -1.522520330230012E-12 1.517471761931722E-9 3.315130569392469E-12 3.32633931256582E-10 1.261105451587054E-12
node 1.400543943504018E-15 -2.175080273223042E-15 3.315130569392469E-12 7.968193402643808E-11 -6.941796982850218E-11 5.43259849397038E-12
peri 1.129794683279859E-13 -2.610781327460725E-13 3.32633931256582E-10 -6.941796982850218E-11 1.466052125977077E-10 -4.888866384192396E-12
i -2.204822477344266E-16 8.235327214057247E-16 1.261105451587054E-12 5.43259849397038E-12 -4.888866384192396E-12 2.944798091735267E-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. 2019-August); 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.]
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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2063-Aug-31 14:57 < 00:01 Thisb 0.0474780961045521 0.0474750939082433 0.0474810996032709 8.24000816264211 8.24000814521386 2474798.122818117 0.700314600860953 437.114732520901 44.5494490926574 -70.8093207252348 150645.237954846 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 03:51:33 2020-Nov-13 03:51
2176-Nov-07 14:08 00:02 Eunom 0.0141235864308626 0.0141013047001735 0.0141458729676368 9.39186062662573 9.39186052079854 2516139.089141291 2.03145327866245 1184.69846777121 55.5329307565775 20.3372772148591 13323.6150936694 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 03:51:33 2020-Nov-13 03:51

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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