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JPL Small-Body Database Browser
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18631 Maurogherardini (1998 DQ35)
Classification: Main-belt Asteroid          SPK-ID: 2018631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140667101665909 4.3273e-08  
a 2.667307634828155 1.5811e-08 au
q 2.292105200585527 1.1877e-07 au
i 11.69913536470151 4.8621e-06 deg
node 327.3462869279838 2.0934e-05 deg
peri 290.2787672382369 2.7764e-05 deg
M 307.9483985557553 1.9788e-05 deg
tp 2459230.559241704048
(2021-Jan-16.05924170)
8.7585e-05 TDB
period 1591.138883635918
4.36
1.4148e-05
3.874e-08
d
yr
n .2262530340389662 2.0117e-09 deg/d
Q 3.042510069070782 1.8035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1890  
   data-arc span      13687 days (37.47 yr)  
   first obs. used      1982-08-14  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42245  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:29:53  

Additional Information
 Earth MOID = 1.30795 au 
 Jupiter MOID = 2.18171 au 
 T_jup = 3.339 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO435872  
diameter diameter 7.434 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.155 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.320   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18631 Maurogherardini           Discovered 1998 Feb. 27 by A. Boattini and M. Tombelli at Cima Ekar.
Mauro Gherardini (1941-2008), a surveyor by profession, was a great lover of the sky. He was a popularizer of astronomy, promoting astro-navigation at evening school events.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-11-04Last Updated: 2017-11-07

Alternate Designations
 1998 DQ35 = 1982 PX = 1982 RQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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