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162 Laurentia (A876 HB)
Classification: Main-belt Asteroid          SPK-ID: 2000162
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815158183841654 3.3661e-08  
a 3.014535821547907 1.007e-08 au
q 2.467349884851257 1.0147e-07 au
i 6.09183559227859 4.0047e-06 deg
node 35.45556682661744 3.6717e-05 deg
peri 115.9171910870866 3.8479e-05 deg
M 203.6345582239888 1.1886e-05 deg
tp 2459830.861826808106
(2022-Sep-08.36182681)
6.4494e-05 TDB
period 1911.741202248043
5.23
9.5794e-06
2.623e-08
d
yr
n .1883100074302269 9.4359e-10 deg/d
Q 3.561721758244558 1.1898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2779  
   data-arc span      43161 days (118.17 yr)  
   first obs. used      1902-04-04  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:08:23  

Additional Information
 Earth MOID = 1.48535 au 
 Jupiter MOID = 1.46368 au 
 T_jup = 3.215 
[ 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 8.9   n/a MPO492750 IRAS observations used: 12
diameter diameter 97.021 km 0.493 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.8686 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Piironen, J.; Bowell, E.; Erikson, A.; Magnusson, P. (1994) Astron. Astrophys. Suppl. Ser. 106, 587-595.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J.; Krajewski, R. (2008) Minor Planet Bull. 35, 47-48.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.051   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.747   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.08, mean=7.16, max.=10.96) deg.
U-B UB 0.374   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=4.08, mean=7.16, max.=10.96) deg.
Tholen spectral type spec_T STU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 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)

162 Laurentia (A876 HB)          Discovered 1876-Apr-21 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

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