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 ]  
31231 Uthmann (1998 CA)
Classification: Main-belt Asteroid          SPK-ID: 2031231
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2321411931579066 3.0617e-08  
a 2.580808241208983 1.0638e-08 au
q 1.981696336782971 7.6265e-08 au
i 9.394658803172113 3.7002e-06 deg
node 95.70460559194346 3.8824e-05 deg
peri 21.39151327835199 4.1809e-05 deg
M 147.7449977558703 1.6716e-05 deg
tp 2458378.998305349022
(2018-Sep-17.49830535)
6.8221e-05 TDB
period 1514.370120632136
4.15
9.3634e-06
2.564e-08
d
yr
n .2377225983894393 1.4699e-09 deg/d
Q 3.179920145634994 1.3108e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1215  
   data-arc span      24073 days (65.91 yr)  
   first obs. used      1953-06-14  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4978  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:38:51  

Additional Information
 Earth MOID = 1.00124 au 
 Jupiter MOID = 1.95009 au 
 T_jup = 3.368 
[ 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 14.6   n/a MPO279840  
diameter diameter 5.948 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.9 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:
[Stephens, R.D.; French, L.M.; James, D.; Connour, K.; Warner, B.D. (2016) Minor Planet Bull. 43, 10-15.]
geometric albedo albedo 0.062   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

31231 Uthmann           Discovered 1998 Feb. 1 by J. Kandler and G. Lehmann at Volkssternwarte Drebach.
Barbara Uthmann (1514-1575) is said to have introduced the art of making lace into the Erzgebirge mountains in Saxony. After her husband's death in 1553, she successfully continued to manage his businesses and established a braid production, thus helping poor miner families to a new way of earning money.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-23 04:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin