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1674 Groeneveld (1938 DS)
Classification: Main-belt Asteroid          SPK-ID: 2001674
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262117308345574 3.1549e-08  
a 3.193512281406984 1.3942e-08 au
q 2.790453568929192 1.0488e-07 au
i 2.664481894975836 3.3851e-06 deg
node 95.57191770444861 8.3099e-05 deg
peri 3.863673971628951 8.4445e-05 deg
M 253.5030723573483 1.5932e-05 deg
tp 2459817.145960666669
(2022-Aug-25.64596067)
9.2987e-05 TDB
period 2084.497184603224
5.71
1.365e-05
3.737e-08
d
yr
n .1727035194190126 1.1309e-09 deg/d
Q 3.596570993884776 1.5701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2968  
   data-arc span      30289 days (82.93 yr)  
   first obs. used      1938-02-06  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44591  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:17  

Additional Information
 Earth MOID = 1.80714 au 
 Jupiter MOID = 1.55466 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456687.5 (2014-Jan-30.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230434766356092 2.9809e-08  
q 2.804961377482489 9.799e-08 au
tp 2457703.211987747102
(2016-Nov-10.71198775)
9.6024e-05 TDB
node 95.67986956611414 8.3357e-05 deg
peri 359.9247879661847 8.4868e-05 deg
i 2.662182205084505 3.361e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2968  
   data-arc span      30289 days (82.93 yr)  
   first obs. used      1938-02-06  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44591  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:17  

Additional Information
 Jupiter MOID = 1.55466 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.885586185480359E-16 -2.900992525360271E-15 6.099409888929692E-13 -5.456522870075741E-16 1.238529124122035E-13 4.505644467297165E-17
q -2.900992525360271E-15 9.602091419378283E-15 -1.732800552502195E-12 -3.075859705952225E-15 -3.725410227021354E-13 1.509429991020056E-17
tp 6.099409888929692E-13 -1.732800552502195E-12 9.220573060287236E-9 -1.187322314587471E-11 1.551556172875161E-9 3.184478593064718E-13
node -5.456522870075741E-16 -3.075859705952225E-15 -1.187322314587471E-11 6.948449099256445E-9 -6.942705758868681E-9 7.539472252108419E-11
peri 1.238529124122035E-13 -3.725410227021354E-13 1.551556172875161E-9 -6.942705758868681E-9 7.202617203103228E-9 -7.527438827622928E-11
i 4.505644467297165E-17 1.509429991020056E-17 3.184478593064718E-13 7.539472252108419E-11 -7.527438827622928E-11 1.129644447108508E-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 11.35   n/a E2021B10 IRAS observations used: 3
diameter diameter 32.386 km 0.393 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 8.02 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.]
[Mas, V.; Fornas, G.; Lozano, J.; Rodrigo, O.; et al. (2018) Minor Planet Bull. 45, 76-82.]
geometric albedo albedo 0.063   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.790   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.09 deg.
U-B UB 0.530   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.09 deg.

1674 Groeneveld (1938 DS)          Discovered 1938-Feb-07 by Reinmuth, K. at Heidelberg
Provisional designation is associated with an independent discovery Feb. 22 by Y. Vaisala, Turku, which was announced first. A third independent discovery earlier on Feb. 22 was made by G. Kulin, Budapest.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 DS = 1949 DF = 1953 VE2 = 1955 DF = 1966 FK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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