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 ]  
1757 Porvoo (1939 FC)
Classification: Main-belt Asteroid          SPK-ID: 2001757
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266214890446697 1.6522e-08  
a 2.351349934356835 5.7275e-09 au
q 2.053618504403486 3.8831e-08 au
i 3.974407857915882 9.3453e-07 deg
node 39.38882722521375 1.3759e-05 deg
peri 149.1071867065265 1.3302e-05 deg
M 285.0207254010261 6.1593e-06 deg
tp 2459670.791949244397
(2022-Apr-01.29194924)
2.3102e-05 TDB
period 1316.96528482198
3.61
4.8118e-06
1.317e-08
d
yr
n .2733557248235764 9.9877e-10 deg/d
Q 2.649081364310184 6.4527e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3139  
   data-arc span      29989 days (82.11 yr)  
   first obs. used      1939-03-17  
   last obs. used      2021-04-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44282  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:02:11  

Additional Information
 Earth MOID = 1.05596 au 
 Jupiter MOID = 2.30437 au 
 T_jup = 3.543 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457293.5 (2015-Sep-28.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260241258107521 1.6561e-08  
q 2.054952113019709 3.8886e-08 au
tp 2457037.293808651771
(2015-Jan-14.79380865)
1.9234e-05 TDB
node 39.42887202424432 1.3745e-05 deg
peri 149.2153838325188 1.3292e-05 deg
i 3.976521010816422 9.3479e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3139  
   data-arc span      29989 days (82.11 yr)  
   first obs. used      1939-03-17  
   last obs. used      2021-04-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44282  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:02:11  

Additional Information
 Jupiter MOID = 2.30437 au 
 T_jup = 3.543 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.742755561349687E-16 -6.386358180922736E-16 7.939664287646169E-14 8.393285005082312E-15 -2.400462550257022E-15 -9.865906590867073E-16
q -6.386358180922736E-16 1.512152736005117E-15 -1.677899069870388E-13 -1.970422580072194E-14 1.182673155449818E-14 2.315339508220668E-15
tp 7.939664287646169E-14 -1.677899069870388E-13 3.699641821179367E-10 6.782063723132363E-11 4.123455377386137E-11 5.211146041585281E-12
node 8.393285005082312E-15 -1.970422580072194E-14 6.782063723132363E-11 1.889325063786677E-10 -1.657758542644232E-10 6.316384544466294E-12
peri -2.400462550257022E-15 1.182673155449818E-14 4.123455377386137E-11 -1.657758542644232E-10 1.766705236053862E-10 -4.52122069897786E-12
i -9.865906590867073E-16 2.315339508220668E-15 5.211146041585281E-12 6.316384544466294E-12 -4.52122069897786E-12 8.738294168052039E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.49   n/a MPO636088  
diameter diameter 10.220 km 2.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 4.89 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P.; Mulholland, J.D. (1983) Icarus 56, 519-533.]
geometric albedo albedo 0.068   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

1757 Porvoo           Discovered 1939 Mar. 17 by Y. Vaisala at Turku.
Named for the second oldest (after Turku) town in Finland. At the Porvoo Diet in 1809 the Russian czar confirmed that Finland was annexed to the Russian empire as an autonomous nation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5449Last Updated: 2006-03-21

Alternate Designations
 1939 FC = 1964 BB = 1968 FK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-22 03:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin