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JPL Small-Body Database Browser
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148 Gallia (A875 PA)
Classification: Main-belt Asteroid          SPK-ID: 2000148
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872253896508888 2.9675e-08  
a 2.771526319880607 6.3486e-09 au
q 2.252626224713266 8.1124e-08 au
i 25.29192458306158 4.6659e-06 deg
node 145.0008448804841 7.1599e-06 deg
peri 252.719566382921 1.4423e-05 deg
M 89.5491101446049 1.3718e-05 deg
tp 2458581.286063987522
(2019-Apr-07.78606399)		 6.3731e-05 TDB
period 1685.298901583609
4.61		 5.7907e-06
1.585e-08		 d
yr
n .2136119590784295 7.3397e-10 deg/d
Q 3.290426415047947 7.5372e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3097  
   data-arc span      51453 days (140.87 yr)  
   first obs. used      1879-06-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:59:43  

Additional Information
 Earth MOID = 1.37367 au 
 Jupiter MOID = 2.46089 au 
 T_jup = 3.174 
[ 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 7.6   n/a MPO502154 IRAS observations used: 14
diameter diameter 97.75 km 3.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
rotation period rot_per 20.664 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Surdej, A.; Surdej, J. (1979) Astron. Astrophys. Suppl. Ser. 37, 471-474.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2007) Minor Planet Bull. 34, 104-107.]
[Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1640   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
B-V BV 0.858   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.40, mean=14.81, max.=20.46) deg.
U-B UB 0.423   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.40, mean=14.81, max.=20.46) deg.
Tholen spectral type spec_T GU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
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)

148 Gallia (A875 PA)          Discovered 1875-Aug-07 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 ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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