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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1973043918587429 3.5096e-08  
a 2.785457048353371 1.1286e-08 au
q 2.23587413937936 1.0088e-07 au
i 33.99355094721577 4.5194e-06 deg
node 197.7058619098365 6.3468e-06 deg
peri 57.93807943628182 1.1837e-05 deg
M 315.8022175822739 1.0913e-05 deg
tp 2459208.968818359393
(2020-Dec-25.46881836)
5.1964e-05 TDB
period 1698.021269485283
4.65
1.032e-05
2.825e-08
d
yr
n .2120114785777247 1.2885e-09 deg/d
Q 3.335039957327381 1.3513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2344  
   data-arc span      42486 days (116.32 yr)  
   first obs. used      1904-04-12  
   last obs. used      2020-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:35  

Additional Information
 Earth MOID = 1.3392 au 
 Jupiter MOID = 1.8962 au 
 T_jup = 3.057 
[ 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 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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