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1794 Finsen (1970 GA)
Classification: Main-belt Asteroid          SPK-ID: 2001794
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1520100111003159 1.7712e-08  
a 3.135916930456257 1.1405e-08 au
q 2.659226163047932 5.485e-08 au
i 14.57014065541067 2.0384e-07 deg
node 220.8733504706061 2.6091e-06 deg
peri 341.8761318496536 5.6996e-06 deg
M 104.2202723426021 5.9806e-06 deg
tp 2458809.287956048738
(2019-Nov-21.78795605)
3.2917e-05 TDB
period 2028.360999936113
5.55
1.1066e-05
3.03e-08
d
yr
n .1774831994952273 9.6825e-10 deg/d
Q 3.612607697864581 1.3139e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3322  
   data-arc span      25875 days (70.84 yr)  
   first obs. used      1950-10-05  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:04:35  

Additional Information
 Earth MOID = 1.6594 au 
 Jupiter MOID = 1.3845 au 
 T_jup = 3.145 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457246.5 (2015-Aug-12.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1507839827507721 1.7789e-08  
q 2.659578232158891 5.4924e-08 au
tp 2456779.545740256832
(2014-May-02.04574026)
3.2693e-05 TDB
node 221.0861782719306 2.6072e-06 deg
peri 340.6583994858754 5.7537e-06 deg
i 14.57739905305336 2.0351e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3322  
   data-arc span      25875 days (70.84 yr)  
   first obs. used      1950-10-05  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:04:35  

Additional Information
 Jupiter MOID = 1.3845 au 
 T_jup = 3.145 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.164326617438586E-16 -9.626228680388375E-16 1.070034627197861E-13 8.578945596141576E-15 -1.872994465317325E-14 -1.377943063308464E-16
q -9.626228680388375E-16 3.016658457105125E-15 -3.670478448486135E-13 -2.791459410317199E-14 5.541072267068363E-14 3.673739876593053E-16
tp 1.070034627197861E-13 -3.670478448486135E-13 1.068854340900037E-9 1.888163341394919E-11 1.566995752281327E-10 7.855158808325319E-13
node 8.578945596141576E-15 -2.791459410317199E-14 1.888163341394919E-11 6.797537502597651E-12 -3.932606783234086E-12 -5.959456356533209E-14
peri -1.872994465317325E-14 5.541072267068363E-14 1.566995752281327E-10 -3.932606783234086E-12 3.310456547270425E-11 2.278787415043242E-13
i -1.377943063308464E-16 3.673739876593053E-16 7.855158808325319E-13 -5.959456356533209E-14 2.278787415043242E-13 4.141716357905128E-14

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 11.03   n/a MPO636089 IRAS observations used: 5
diameter diameter 38.050 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.347 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Hills, K. (2016) Minor Planet Bull. 43, 5-6.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Colazo, M.; Fornari, C.; Santucho, M.; Mottino, A.; et al. (2020) Minor Planet Bull. 47, 188-191.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.046   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.695   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.97 deg.
U-B UB 0.312   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.97 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1794 Finsen (1970 GA)          Discovered 1970-Apr-07 by Bruwer, J. A. at Hartbeespoort
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1970 GA = 1937 JR = 1948 GK = 1950 TJ = 1950 TS2 = 1951 XL = 1951 YJ = 1962 WX = 1965 MC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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