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
JPL Small-Body Database Browser
Search: [ help ]  
7556 Perinaldo (1982 FX2)
Classification: Main-belt Asteroid          SPK-ID: 2007556
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180111501653146 3.9697e-08  
a 2.907521869536523 1.2786e-08 au
q 2.564401869581712 1.1652e-07 au
i 2.633525644981503 4.8662e-06 deg
node 15.93050747716229 6.8421e-05 deg
peri 19.92060668662246 7.1488e-05 deg
M 23.73053042310993 1.8582e-05 deg
tp 2458881.132016639719
(2020-Feb-01.63201664)
9.3566e-05 TDB
period 1810.851811717296
4.96
1.1945e-05
3.27e-08
d
yr
n .1988014688284179 1.3114e-09 deg/d
Q 3.250641869491333 1.4295e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2218  
   data-arc span      13836 days (37.88 yr)  
   first obs. used      1982-03-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:32:28  

Additional Information
 Earth MOID = 1.57137 au 
 Jupiter MOID = 2.16608 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1168052122452385 4.0524e-08  
q 2.568664603752442 1.189e-07 au
tp 2457057.913647387725
(2015-Feb-04.41364739)
9.6954e-05 TDB
node 16.0257413195612 6.8143e-05 deg
peri 17.75068089829516 7.1308e-05 deg
i 2.642682195237759 4.8722e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2218  
   data-arc span      13836 days (37.88 yr)  
   first obs. used      1982-03-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:32:28  

Additional Information
 Jupiter MOID = 2.16608 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.642205313206378E-15 -4.797124227086785E-15 -2.159505033397068E-12 -5.954576588278732E-19 -4.693831305521786E-13 1.485774124041514E-16
q -4.797124227086785E-15 1.413687729859E-14 6.061481352890378E-12 -1.657434543028919E-15 1.315215955713821E-12 -2.662193537064058E-16
tp -2.159505033397068E-12 6.061481352890378E-12 9.400046496226253E-9 3.4405997908262E-13 2.046625593858966E-9 -1.725917487908198E-12
node -5.954576588278732E-19 -1.657434543028919E-15 3.4405997908262E-13 4.643443294063301E-9 -4.637837089155057E-9 -8.93395432115984E-11
peri -4.693831305521786E-13 1.315215955713821E-12 2.046625593858966E-9 -4.637837089155057E-9 5.084860560165931E-9 8.885536154484236E-11
i 1.485774124041514E-16 -2.662193537064058E-16 -1.725917487908198E-12 -8.93395432115984E-11 8.885536154484236E-11 2.37382191575629E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO328759  
diameter diameter 9.604 km 0.519 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.159   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

7556 Perinaldo           Discovered 1982 Mar. 18 by H. Debehogne at the European Southern Observatory.
Perinaldo is a village in Liguria, Italy, where the astronomer Giovanni Domenico Cassini (1625-1712) was born. A well-organized group of amateur astronomers in Perinaldo is today very active in the popularization of astronomy. The name was suggested by M. Di Martino.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120207/MPCPages.arcLast Updated: 2012-02-09

Alternate Designations
 1982 FX2 = 1995 XF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-09 17:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin