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1252 Celestia (1933 DG)
Classification: Main-belt Asteroid          SPK-ID: 2001252
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072318612416471 4.0205e-08  
a 2.695036034076991 1.095e-08 au
q 2.13653870062191 1.1001e-07 au
i 33.83614373579207 5.0464e-06 deg
node 140.8999910777219 7.431e-06 deg
peri 63.57913246741794 1.3257e-05 deg
M 226.2915892895989 1.2276e-05 deg
tp 2459600.707637309251
(2022-Jan-21.20763731)
5.6492e-05 TDB
period 1616.014641736535
4.42
9.8491e-06
2.697e-08
d
yr
n .2227702588221303 1.3577e-09 deg/d
Q 3.253533367532073 1.322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2255  
   data-arc span      31724 days (86.86 yr)  
   first obs. used      1933-03-28  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37588  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:49:31  

Additional Information
 Earth MOID = 1.27625 au 
 Jupiter MOID = 2.07083 au 
 T_jup = 3.100 
[ 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 10.8   n/a MPO502165 IRAS observations used: 2
diameter diameter 19.037 km 0.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.636 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Worman, W.E. (1995) Minor Planet Bull. 22, 39-40.]
geometric albedo albedo 0.215   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.890   0.008 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.95, mean=13.97, max.=13.99) deg.
U-B UB 0.425   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.95, mean=13.97, max.=13.99) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1252 Celestia (1933 DG)          Discovered 1933-Feb-19 by Whipple, F. L. at Harvard
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
1979-Mar-28 17:10 < 00:01 Ceres 0.043553702318817 0.0435523556047098 0.0435550491343775 8.81351854636314 8.8135174457941 2443961.215468885 0.365805518667141 138.634646288771 33.9487837158636 64.5280926836413 174129.498411434 T 35 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49

Alternate Designations
 1933 DG = 1934 PA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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