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JPL Small-Body Database Browser
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187 Lamberta
Classification: Main-belt Asteroid          SPK-ID: 2000187
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412956175936222 3.3855e-08  
a 2.727125382078189 7.7894e-09 au
q 2.069081978754389 9.0928e-08 au
i 10.58457663827469 3.337e-06 deg
node 21.69147863326249 1.7231e-05 deg
peri 196.8222874160737 1.8446e-05 deg
M 163.9267711861075 8.2465e-06 deg
tp 2458251.462658220544
(2018-May-12.96265822)
3.6565e-05 TDB
period 1644.962815344323
4.50
7.0477e-06
1.93e-08
d
yr
n .2188499318293981 9.3764e-10 deg/d
Q 3.385168785401989 9.6689e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2773  
   data-arc span      42864 days (117.36 yr)  
   first obs. used      1902-09-26  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:20:15  

Additional Information
 Earth MOID = 1.0647 au 
 Jupiter MOID = 1.60342 au 
 T_jup = 3.289 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454618.5 (2008-Jun-01.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363968816622064 3.3203e-08  
q 2.086493001794885 8.8361e-08 au
tp 2454947.601634144975
(2009-Apr-26.10163414)
3.6744e-05 TDB
node 21.88741365995841 1.7196e-05 deg
peri 195.2062818985265 1.8562e-05 deg
i 10.59494859290026 3.3376e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2773  
   data-arc span      42864 days (117.36 yr)  
   first obs. used      1902-09-26  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:20:15  

Additional Information
 Jupiter MOID = 1.60342 au 
 T_jup = 3.289 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.102411669607587E-15 -2.927626955963357E-15 -3.760052179623185E-13 2.738980042595912E-16 -4.804687357439421E-14 -1.4934169930616E-15
q -2.927626955963357E-15 7.807724180030874E-15 1.021372197864914E-12 1.438983542686271E-15 1.279812214562936E-13 3.909593874405535E-15
tp -3.760052179623185E-13 1.021372197864914E-12 1.350145210031302E-9 5.436063180255783E-12 2.647144057903236E-10 3.95410830076088E-12
node 2.738980042595912E-16 1.438983542686271E-15 5.436063180255783E-12 2.957130000499302E-10 -2.900330393739842E-10 -6.763158538450381E-12
peri -4.804687357439421E-14 1.279812214562936E-13 2.647144057903236E-10 -2.900330393739842E-10 3.445386433662692E-10 7.444108694245312E-12
i -1.4934169930616E-15 3.909593874405535E-15 3.95410830076088E-12 -6.763158538450381E-12 7.444108694245312E-12 1.11393054252717E-11

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 8.3   n/a MPO502154 IRAS observations used: 12
diameter diameter 147.294 km 1.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 10.670 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J. (2006) IAU 2006, poster paper.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.044   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.709   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.94, mean=11.39, max.=19.79) deg.
U-B UB 0.348   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.94, mean=11.39, max.=19.79) deg.
Tholen spectral type spec_T C   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)

187 Lamberta          Discovered 1878-Apr-11 by Coggia, J. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1946 LB = 1948 XR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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