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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509892673895823 3.37e-08  
a 3.13113897884515 1.3013e-08 au
q 2.658370598334356 1.0534e-07 au
i 14.57895440069491 4.2573e-06 deg
node 221.0618347210775 1.3124e-05 deg
peri 341.2045538627111 1.8916e-05 deg
M 34.43794982460469 1.2461e-05 deg
tp 2458806.908300677552
(2019-Nov-19.40830068)
7.0429e-05 TDB
period 2023.727083378473
5.54
1.2616e-05
3.454e-08
d
yr
n .1778895993223576 1.109e-09 deg/d
Q 3.603907359355944 1.4978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3000  
   data-arc span      25587 days (70.05 yr)  
   first obs. used      1950-10-05  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44261  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:26  

Additional Information
 Earth MOID = 1.65824 au 
 Jupiter MOID = 1.39673 au 
 T_jup = 3.146 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457083.5 (2015-Mar-02.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1507140624631941 3.3592e-08  
q 2.659337938670029 1.049e-07 au
tp 2456779.311187538992
(2014-May-01.81118754)
7.564e-05 TDB
node 221.0922461256228 1.3124e-05 deg
peri 340.5977577206688 1.8967e-05 deg
i 14.57812467619831 4.2572e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3000  
   data-arc span      25587 days (70.05 yr)  
   first obs. used      1950-10-05  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44261  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:26  

Additional Information
 Jupiter MOID = 1.39673 au 
 T_jup = 3.146 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.128419251611098E-15 -3.504134575603136E-15 7.982483388383854E-13 -1.544080415914596E-15 1.483543655943272E-13 -2.046872299747014E-15
q -3.504134575603136E-15 1.100329292258107E-14 -2.872566387303911E-12 -4.824085922387752E-15 -5.224924565265856E-13 5.296458240544959E-15
tp 7.982483388383854E-13 -2.872566387303911E-12 5.72133674689595E-9 1.230504141848168E-11 1.042103485045138E-9 -1.860594183823155E-12
node -1.544080415914596E-15 -4.824085922387752E-15 1.230504141848168E-11 1.722433442932747E-10 -1.65853604511951E-10 1.469238682532068E-11
peri 1.483543655943272E-13 -5.224924565265856E-13 1.042103485045138E-9 -1.65853604511951E-10 3.597491886887919E-10 -1.483773055994702E-11
i -2.046872299747014E-15 5.296458240544959E-15 -1.860594183823155E-12 1.469238682532068E-11 -1.483773055994702E-11 1.812404878384452E-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 11.0   n/a MPO473788 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 12.346 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.]
[Hills, K. (2016) Minor Planet Bull. 43, 5-6.]
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-May-01 16:59 00:01 Jupiter 1.53824630095586 1.53824523438618 1.53824736753105 3.95220225266175 3.81033060258958 2425733.207521447 1.30444407662623 188.079157449755 31.1260223267345 76.6677415989035 3437311.98587804 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
1939-Aug-31 18:50 00:01 Jupiter 1.62305444863498 1.62305327884373 1.62305561842826 3.15663913760749 2.98674266811779 2429507.284677593 1.3576325721701 133.592336910407 45.98349260763 -68.0506933503072 2269955.60342606 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2011-Oct-25 17:20 < 00:01 Jupiter 1.38454462700947 1.38454424878775 1.38454500523112 3.83811456811666 3.67526651339995 2455860.222343005 0.212299659884048 68.4708287687465 17.8032820863687 89.319548143335 3107794.67510182 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2021-Dec-01 20:49 < 00:01 Jupiter 1.93410059111939 1.93409989005487 1.93410129218392 2.15431041771463 1.94040479994732 2459550.367589594 0.478047664867245 106.044025955505 38.3375090960551 76.5418980153475 2950708.55657218 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2083-Dec-16 08:23 00:01 Jupiter 1.72480550863157 1.7248041555563 1.72480686170703 3.90598013316689 3.77816290967715 2482209.849628268 1.20057282534097 105.127215441147 63.1935653633932 74.7047699227406 2831731.25078696 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2094-Apr-27 13:26 00:01 Jupiter 1.45631417689405 1.45631327761163 1.45631507618466 3.65789752899592 3.49527865428155 2485995.059881140 1.29834897577271 208.299587330798 22.6061192684143 -78.5608049762811 2864591.40678306 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2166-May-24 23:32 00:02 Jupiter 1.44547182445595 1.44547034848456 1.44547330045906 3.90848217930705 3.75556468672803 2512319.480614239 2.26126291322428 376.423431332817 26.2294679305825 79.6336088263664 3210331.65758048 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15
2176-Sep-14 18:42 00:03 Jupiter 1.73387024041747 1.73386739034148 1.73387309049533 3.13008324428991 2.96991415422273 2516085.278944631 3.25247563517398 173.213567427404 82.8853966244626 -19.2375461123896 2089849.15935894 T 38 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:34 2020-Nov-13 04:15

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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