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49 Pales
Classification: Main-belt Asteroid          SPK-ID: 2000049
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 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2274864782309654 3.8332e-08  
a 3.093789510167753 7.5138e-09 AU
q 2.389994230111788 1.1838e-07 AU
i 3.173777489376366 3.9129e-06 deg
node 285.9962252105453 8.0798e-05 deg
peri 110.1984256170234 8.1175e-05 deg
M 312.9026624786704 8.4177e-06 deg
tp 2457260.532976100900
(2015-Aug-26.03297610)
4.7008e-05 JED
period 1987.625550041525
5.44
7.241e-06
1.982e-08
d
yr
n .1811206341116308 6.5983e-10 deg/d
Q 3.797584790223719 9.2231e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1497  
   data-arc span      55063 days (150.75 yr)  
   first obs. used      1863-11-20  
   last obs. used      2014-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65106  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:33:23  

Additional Information
 Earth MOID = 1.39914 AU 
 T_jup = 3.181 
[ 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 7.8 mag n/a MPO302057  
diameter diameter 149.80 km 3.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 10.42 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.]
[Schober, H.J.; Scaltriti, F.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 36, 1-8.]
geometric albedo albedo 0.0597   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV .749 mag .045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=2.44, mean=12.29, max.=19.60) deg.
U-B UB .411 mag .044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=2.44, mean=11.44, max.=19.60) deg.
Tholen spectral type spec_T CG   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   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)

49 Pales          Discovered 1857-Sep-19 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1947 FG = 1950 XJ = 1954 MF = 1988 VU7 = A908 AF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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