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 ]  
2191 Uppsala (1977 PA1)
Classification: Main-belt Asteroid          SPK-ID: 2002191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08455567078928965 3.2925e-08  
a 3.01738994176285 1.5508e-08 au
q 2.762252511204237 1.0461e-07 au
i 9.049993269442718 3.542e-06 deg
node 247.2758280849293 2.9005e-05 deg
peri 181.4644582671809 4.0952e-05 deg
M 319.1321665643559 3.0241e-05 deg
tp 2459217.832511248822
(2021-Jan-03.33251125)
0.00016141 TDB
period 1914.456859397325
5.24
1.4759e-05
4.041e-08
d
yr
n .1880428896754188 1.4497e-09 deg/d
Q 3.272527372321463 1.6819e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2381  
   data-arc span      24043 days (65.83 yr)  
   first obs. used      1954-03-28  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:14:56  

Additional Information
 Earth MOID = 1.77636 au 
 Jupiter MOID = 2.00795 au 
 T_jup = 3.223 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO416730  
diameter diameter 17.54 km 1.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
geometric albedo albedo 0.1734   0.029 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

2191 Uppsala           Discovered 1977 Aug. 6 by C.-I. Lagerkvist at the Uppsala Southern Station, Mt. Stromlo.
Named for the ancient Swedish city and university.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5285Last Updated: 2007-10-23

Alternate Designations
 1977 PA1 = 1925 VL = 1957 WJ2 = 1972 RP3 = 1978 VB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 20:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin