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 ]  
1938 Lausanna (1974 HC)
Classification: Main-belt Asteroid          SPK-ID: 2001938
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1590442430950719 1.7684e-08  
a 2.236357596744431 4.1902e-09 au
q 1.880677795480298 3.8736e-08 au
i 3.334224047106655 2.0531e-07 deg
node 171.6647402781377 8.0939e-06 deg
peri 64.96736851223606 7.4759e-06 deg
M 20.39876980656613 4.2782e-06 deg
tp 2459327.283158640331
(2021-Apr-22.78315864)
1.444e-05 TDB
period 1221.547334754473
3.34
3.4332e-06
9.4e-09
d
yr
n .2947081867051503 8.2828e-10 deg/d
Q 2.592037398008562 4.8567e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3566  
   data-arc span      31868 days (87.25 yr)  
   first obs. used      1934-05-10  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42246  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:12:25  

Additional Information
 Earth MOID = .872407 au 
 Jupiter MOID = 2.40603 au 
 T_jup = 3.619 
[ 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 12.63   n/a MPO614063  
diameter diameter 7.638 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.7481 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warell, J.; Pappini, R. (2015) Minor Planet Bull. 42, 20-21.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
geometric albedo albedo 0.192   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1938 Lausanna (1974 HC)          Discovered 1974-Apr-19 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1974 HC = 1934 KA = 1947 DB = 1950 CO = 1955 VK = 1957 EH = 1962 WB1 = 1967 ED1 = 1971 OX = 1972 XY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-18 21:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin