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248 Lameia (A885 LA)
Classification: Main-belt Asteroid          SPK-ID: 2000248
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 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06577236880035019 3.0744e-08  
a 2.470839323715336 5.5107e-09 au
q 2.308326368469523 7.6748e-08 au
i 4.060719412049128 3.3572e-06 deg
node 246.7875317030217 4.6195e-05 deg
peri 11.20702062261657 5.3791e-05 deg
M 259.033717760862 2.8911e-05 deg
tp 2459398.368034070397
(2021-Jul-02.86803407)
0.00011415 TDB
period 1418.617077789374
3.88
4.7459e-06
1.299e-08
d
yr
n .2537682688558824 8.4897e-10 deg/d
Q 2.633352278961149 5.8731e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3653  
   data-arc span      49330 days (135.06 yr)  
   first obs. used      1885-06-06  
   last obs. used      2020-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:45  

Additional Information
 Earth MOID = 1.29336 au 
 Jupiter MOID = 2.39093 au 
 T_jup = 3.478 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456149.5 (2012-Aug-10.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0665138701923082 3.0679e-08  
q 2.305737917986977 7.6641e-08 au
tp 2456563.193594662087
(2013-Sep-27.69359466)
0.00011187 TDB
node 246.8810604848528 4.624e-05 deg
peri 11.70715056477737 5.371e-05 deg
i 4.058650044503647 3.3564e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3653  
   data-arc span      49330 days (135.06 yr)  
   first obs. used      1885-06-06  
   last obs. used      2020-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:45  

Additional Information
 Jupiter MOID = 2.39093 au 
 T_jup = 3.478 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.412196659131621E-16 -2.346150814057874E-15 1.676891169459473E-13 -1.311495710098318E-15 3.615561977208082E-14 2.676560113922447E-16
q -2.346150814057874E-15 5.873837904748462E-15 -3.702292380309557E-13 3.111984596752777E-15 -8.112422446412492E-14 -7.482798353611633E-16
tp 1.676891169459473E-13 -3.702292380309557E-13 1.251598286756446E-8 -7.63232058408849E-12 3.068493762601181E-9 -1.475164698361826E-12
node -1.311495710098318E-15 3.111984596752777E-15 -7.63232058408849E-12 2.138135359329069E-9 -2.134000109313992E-9 -2.505150154517349E-13
peri 3.615561977208082E-14 -8.112422446412492E-14 3.068493762601181E-9 -2.134000109313992E-9 2.884745946664321E-9 -1.171436226265755E-13
i 2.676560113922447E-16 -7.482798353611633E-16 -1.475164698361826E-12 -2.505150154517349E-13 -1.171436226265755E-13 1.126523109291183E-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 10.3   n/a MPO502155  
diameter diameter 50.120 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.912 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Pilcher, F.; Benishek, V.; Hills, K. (2015) Minor Planet Bull. 42, 137-139.]
geometric albedo albedo 0.062   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.830   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.89 deg.
U-B UB 0.340   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.89 deg.

248 Lameia (A885 LA)          Discovered 1885-Jun-05 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A885 LA = 1959 LO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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