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JPL Small-Body Database Browser
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144 Vibilia
Classification: Main-belt Asteroid          SPK-ID: 2000144
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2345040633284303 3.9105e-08  
a 2.655049606333427 9.0677e-09 au
q 2.032429685309689 1.0342e-07 au
i 4.814381215750085 4.333e-06 deg
node 76.19644703599 5.4211e-05 deg
peri 294.6136961637899 5.4992e-05 deg
M 7.365112057888659 1.1599e-05 deg
tp 2458568.171597498065
(2019-Mar-25.67159750)
5.082e-05 TDB
period 1580.183004579145
4.33
8.0951e-06
2.216e-08
d
yr
n .2278217136602352 1.1671e-09 deg/d
Q 3.277669527357165 1.1194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2382  
   data-arc span      41796 days (114.43 yr)  
   first obs. used      1905-05-26  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48289  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:49:57  

Additional Information
 Earth MOID = 1.03742 au 
 Jupiter MOID = 2.19362 au 
 T_jup = 3.344 
[ 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 7.91   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
magnitude slope G 0.17   n/a PDS3 (MPC 17257) Fit
diameter diameter 142.38 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 13.819 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Zappala, V.; Scaltriti, F.; Di Martino, M. (1983) Icarus 56, 325-344.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.0597   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV 0.727   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.88, mean=19.09, max.=27.75) deg.
U-B UB 0.402   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.88, mean=19.09, max.=27.75) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

144 Vibilia          Discovered 1875-Jun-03 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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