Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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 
[ 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 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

[ 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 17:00 00:01 Jupiter 1.53824683926726 1.5382458262692 1.53824785227118 3.95220203268353 3.8103304257916 2425733.208094292 1.23855675473316 164.106296635169 11.1327373688632 72.7747107182768 11851632.1227083 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
1939-Aug-31 18:51 00:01 Jupiter 1.62305401945452 1.62305300832226 1.62305503058826 3.15664035635343 2.98674391095245 2429507.285199206 1.29396158005074 100.760005918962 27.0805046926403 -56.7479455239596 27957682.6798473 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2011-Oct-25 17:20 < 00:01 Jupiter 1.38454461655936 1.38454445493725 1.38454477818148 3.83811402968017 3.67526595076897 2455860.222265034 0.120979393541937 26.6313242866791 7.31432759722692 -84.8762931006021 17296415.0365464 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2021-Dec-01 20:49 < 00:01 Jupiter 1.93410103927506 1.93410080140112 1.93410127714933 2.15430978793657 1.9404041542874 2459550.367279115 0.229115845910535 43.0393823715204 8.69513183816122 74.8412149862948 11771960.4199555 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2083-Dec-16 08:23 00:01 Jupiter 1.72480449372766 1.72480350950243 1.72480547795337 3.9059797482043 3.77816243592711 2482209.849139966 1.00817198510007 71.7244551704538 20.8884088888066 49.2780771408239 8430773.64292581 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2094-Apr-27 13:25 00:01 Jupiter 1.45631493620068 1.45631420684184 1.45631566556573 3.65789610058166 3.49527724708923 2485995.059292529 1.10261752213763 167.481076067302 12.4253786353551 -77.4155824533465 17446602.1216672 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2166-May-24 23:30 00:02 Jupiter 1.44547052490116 1.44546935717221 1.44547169265788 3.90848154049034 3.75556388248228 2512319.479325297 1.98456881854994 332.91072667102 10.1843212681914 80.1446279925339 13506152.7172995 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06
2176-Sep-14 18:39 00:03 Jupiter 1.73387286927297 1.73387042505507 1.73387531349235 3.13007617216125 2.96990695099149 2516085.277058212 2.84606492387168 149.721559113168 33.6311300559401 -18.1691671619135 8460125.18059967 T 45 CATAB v2.0g-lin.ifort 2021-Aug-25 08:06:02 2021-Aug-25 08:06

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-18 06:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin