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531 Zerlina (A904 GC)
Classification: Main-belt Asteroid          SPK-ID: 2000531
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197304391848474 3.5097e-08  
a 2.785457048311328 1.1287e-08 au
q 2.235874139374216 1.0089e-07 au
i 33.99355095278158 4.5195e-06 deg
node 197.7058618800847 6.3477e-06 deg
peri 57.93807943801572 1.1838e-05 deg
M 315.8022176169452 1.0915e-05 deg
tp 2459208.968818191139
(2020-Dec-25.46881819)
5.1973e-05 TDB
period 1698.02126944684
4.65
1.0321e-05
2.826e-08
d
yr
n .2120114785825247 1.2887e-09 deg/d
Q 3.335039957248441 1.3514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      42482 days (116.31 yr)  
   first obs. used      1904-04-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:17:42  

Additional Information
 Earth MOID = 1.3392 au 
 Jupiter MOID = 1.8962 au 
 T_jup = 3.057 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456950.5 (2014-Oct-20.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197182721600738 3.5172e-08  
q 2.237453838309291 1.013e-07 au
tp 2457508.516976830851
(2016-Apr-30.01697683)
4.8734e-05 TDB
node 197.7716120143199 6.3482e-06 deg
peri 57.53942865991736 1.1811e-05 deg
i 33.97261792721542 4.52e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2341  
   data-arc span      42482 days (116.31 yr)  
   first obs. used      1904-04-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:17:42  

Additional Information
 Jupiter MOID = 1.8962 au 
 T_jup = 3.057 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.237035392102674E-15 -3.549702037482263E-15 -4.243656428648833E-13 -4.541388432822698E-16 -7.937119361233937E-14 -4.667217803919679E-15
q -3.549702037482263E-15 1.026074984584098E-14 1.286097006922124E-12 1.282048184525644E-15 2.358144004560089E-13 1.283721774591464E-14
tp -4.243656428648833E-13 1.286097006922124E-12 2.375012832423523E-9 2.57550501385826E-12 4.965061144688454E-10 3.914055553797749E-12
node -4.541388432822698E-16 1.282048184525644E-15 2.57550501385826E-12 4.029912928652495E-11 -3.256497060799433E-11 1.739606998007304E-12
peri -7.937119361233937E-14 2.358144004560089E-13 4.965061144688454E-10 -3.256497060799433E-11 1.39496980322115E-10 -7.469549993053076E-13
i -4.667217803919679E-15 1.283721774591464E-14 3.914055553797749E-12 1.739606998007304E-12 -7.469549993053076E-13 2.043032577935594E-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 12.0   n/a MPO250196  
diameter diameter 17.804 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.706 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2008) Minor Planet Bull. 35, 86-87.]
[Pilcher, F.; Brinsfield, J.W. (2011) Minor Planet Bull. 38, 206.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.101   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B B   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)

531 Zerlina (A904 GC)          Discovered 1904-Apr-12 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A904 GC = 1955 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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