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756 Lilliana (A908 HD)
Classification: Main-belt Asteroid          SPK-ID: 2000756
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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1484988756242525 3.1917e-08  
a 3.194678460973284 1.2511e-08 au
q 2.720272301537734 1.0057e-07 au
i 20.35463716561325 3.7448e-06 deg
node 208.0670283806592 8.2743e-06 deg
peri 4.490794229458624 1.3051e-05 deg
M 163.4583762472 1.1176e-05 deg
tp 2458053.513392700172
(2017-Oct-27.01339270)
6.356e-05 TDB
period 2085.639087178795
5.71
1.2252e-05
3.354e-08
d
yr
n .1726089629855208 1.0139e-09 deg/d
Q 3.669084620408833 1.4369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2869  
   data-arc span      40980 days (112.20 yr)  
   first obs. used      1908-05-24  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .416  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:21:32  

Additional Information
 Earth MOID = 1.71531 au 
 Jupiter MOID = 1.29692 au 
 T_jup = 3.082 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455773.5 (2011-Jul-31.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1477741804372127 3.1923e-08  
q 2.724867656326862 1.007e-07 au
tp 2455972.766513956381
(2012-Feb-15.26651396)
6.3238e-05 TDB
node 208.1057221914092 8.2721e-06 deg
peri 5.619559782171589 1.3076e-05 deg
i 20.34995366003017 3.7444e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2869  
   data-arc span      40980 days (112.20 yr)  
   first obs. used      1908-05-24  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .416  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:21:32  

Additional Information
 Jupiter MOID = 1.29692 au 
 T_jup = 3.082 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.019099386666869E-15 -3.196686342688512E-15 2.234640330720529E-14 1.693892275425423E-15 2.986534578977698E-15 1.466371481449868E-16
q -3.196686342688512E-15 1.014114651452563E-14 -1.143976881412833E-13 -4.969781005295331E-15 -1.872234387673968E-14 1.300460471480071E-16
tp 2.234640330720529E-14 -1.143976881412833E-13 3.999065641746055E-9 9.511684917265159E-13 6.501296844223695E-10 -1.942442386463571E-13
node 1.693892275425423E-15 -4.969781005295331E-15 9.511684917265159E-13 6.84270143570203E-11 -6.38649925339909E-11 1.733112594857856E-12
peri 2.986534578977698E-15 -1.872234387673968E-14 6.501296844223695E-10 -6.38649925339909E-11 1.709832165224646E-10 -1.641801200452199E-12
i 1.466371481449868E-16 1.300460471480071E-16 -1.942442386463571E-13 1.733112594857856E-12 -1.641801200452199E-12 1.402026109560475E-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 9.9   n/a MPO302062  
diameter diameter 64.837 km 0.499 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.834 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2002) 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]
[Pilcher, F. (2012) Minor Planet Bull. 39, 220-222.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

756 Lilliana (A908 HD)          Discovered 1908-Apr-26 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A908 HD = 1949 HJ1 = 1966 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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