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186 Celuta
Classification: Main-belt Asteroid          SPK-ID: 2000186
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497131630194636 4.524e-08  
a 2.36204322209269 9.4421e-09 AU
q 2.008414260124508 1.0615e-07 AU
i 13.17402536715884 5.9975e-06 deg
node 14.8247499509268 2.1577e-05 deg
peri 315.0861267536162 2.7586e-05 deg
M 112.9781415478004 1.8408e-05 deg
tp 2456584.376624180390
(2013-Oct-18.87662418)
6.6888e-05 JED
period 1325.959280642602
3.63
7.9506e-06
2.177e-08
d
yr
n .2715015500517727 1.628e-09 deg/d
Q 2.715672184060872 1.0856e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1081  
   data-arc span      47772 days (130.79 yr)  
   first obs. used      1883-12-07  
   last obs. used      2014-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5925  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:45:04  

Additional Information
 Earth MOID = 1.0216 AU 
 T_jup = 3.500 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.91 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
diameter diameter 49.99 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 19.842 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Lagerkvist, C.-I.; Pettersson, B. (1978) Astron. Astrophys. Suppl. Ser. 32, 339-342.]
[Pilcher, F. (2011) Minor Planet Bul. 38, 76-78.]
geometric albedo albedo 0.1929   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV .859 mag .033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=11.20, mean=18.65, max.=22.59) deg.
U-B UB .397 mag .025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=22.15, mean=22.37, max.=22.59) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B K   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)

186 Celuta          Discovered 1878-Apr-06 by Henry, Prosper at Paris
In their cooperative program it will probably never be known which of the Henry brothers discovered which planet. With strict impartiality, these discoveries were announced as having been made alternatively by Prosper and by Paul.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1954 FD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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