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144 Vibilia (A875 LA)
Classification: Main-belt Asteroid          SPK-ID: 2000144
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 107 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .234915418368932 2.1339e-08  
a 2.65513862861874 5.7521e-09 au
q 2.031405626849256 5.5695e-08 au
i 4.813913576058093 3.4286e-07 deg
node 76.18845407612822 5.606e-06 deg
peri 294.6070408932545 8.1146e-06 deg
M 144.0192250067292 4.4362e-06 deg
tp 2458568.310617890280
(2019-Mar-25.81061789)
1.8946e-05 TDB
period 1580.262479185436
4.33
5.1352e-06
1.406e-08
d
yr
n .2278102560440251 7.4029e-10 deg/d
Q 3.278871630388223 7.1033e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2973  
   data-arc span      53254 days (145.80 yr)  
   first obs. used      1875-06-04  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45107  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:55:18  

Additional Information
 Earth MOID = 1.03575 au 
 Jupiter MOID = 2.19684 au 
 T_jup = 3.344 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457191.5 (2015-Jun-18.0) TDB
Reference: JPL 107 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2347566756378098 2.1987e-08  
q 2.031339956223485 5.7726e-08 au
tp 2456981.863305407296
(2014-Nov-20.36330541)
1.8374e-05 TDB
node 76.4306871314752 5.6328e-06 deg
peri 293.4292981513797 8.1243e-06 deg
i 4.807374490001203 3.4233e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2973  
   data-arc span      53254 days (145.80 yr)  
   first obs. used      1875-06-04  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45107  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:55:18  

Additional Information
 Jupiter MOID = 2.19684 au 
 T_jup = 3.344 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.83445040863758E-16 -1.265803577411995E-15 -2.834574131493208E-13 1.918564111747094E-14 -1.17338964500139E-13 2.051816971590357E-16
q -1.265803577411995E-15 3.33234778021128E-15 7.535284193665682E-13 -5.04093911461962E-14 3.102837630395513E-13 -5.03728690354809E-16
tp -2.834574131493208E-13 7.535284193665682E-13 3.376100680231522E-10 -3.986372664869114E-12 1.031286920577589E-10 8.09156364907641E-13
node 1.918564111747094E-14 -5.04093911461962E-14 -3.986372664869114E-12 3.172805445233705E-11 -3.335960274374257E-11 7.055565950738469E-13
peri -1.17338964500139E-13 3.102837630395513E-13 1.031286920577589E-10 -3.335960274374257E-11 6.600422771040685E-11 -5.264465606578928E-13
i 2.051816971590357E-16 -5.03728690354809E-16 8.09156364907641E-13 7.055565950738469E-13 -5.264465606578928E-13 1.171907214061794E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.13   n/a E2020-QM5 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. 2020-October); 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 (A875 LA)          Discovered 1875-Jun-03 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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