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4043 Perolof (1175 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2004043
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09840920305674621 2.1201e-08  
a 3.116624689054858 1.6512e-08 au
q 2.80992013717799 6.8159e-08 au
i 6.570971593061013 1.0663e-06 deg
node 303.1433888583938 8.0199e-06 deg
peri 12.2768552474052 1.4464e-05 deg
M 359.9028142403081 1.0721e-05 deg
tp 2459201.042531951134
(2020-Dec-17.54253195)
5.9848e-05 TDB
period 2009.672024250857
5.50
1.5971e-05
4.373e-08
d
yr
n .179133707219812 1.4236e-09 deg/d
Q 3.423329240931726 1.8137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2259  
   data-arc span      15764 days (43.16 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:52:29  

Additional Information
 Earth MOID = 1.79449 au 
 Jupiter MOID = 1.8351 au 
 T_jup = 3.200 
[ 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 12.45   n/a E2021B10  
diameter diameter 17.662 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.4933 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.054   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4043 Perolof (1175 T-3)          Discovered 1977-Oct-17 by van Houten, C. J. at Palomar
Discovered in the course of the Third Trojan Survey by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1175 T-3 = 1981 JT1 = 1982 QB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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