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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
201481 (2003 HG1)
Classification: Main-belt Asteroid          SPK-ID: 2201481
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1877454150270015 3.6374e-08  
a 2.419452812908041 1.3126e-08 au
q 1.965211640410375 8.6119e-08 au
i 3.533175222953884 4.5234e-06 deg
node 78.50406668054893 0.00011856 deg
peri 188.9594514375424 0.00012028 deg
M 160.6434313033881 2.1708e-05 deg
tp 2458387.112907799423
(2018-Sep-25.61290780)
8.1395e-05 TDB
period 1374.593105989952
3.76
1.1186e-05
3.063e-08
d
yr
n .261895682752414 2.1312e-09 deg/d
Q 2.873693985405708 1.559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      6976 days (19.10 yr)  
   first obs. used      2000-09-26  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62374  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:22:21  

Additional Information
 Earth MOID = .949333 au 
 Jupiter MOID = 2.21623 au 
 T_jup = 3.488 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456991.5 (2014-Nov-30.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876883558185092 3.6241e-08  
q 1.965121204766835 8.5748e-08 au
tp 2457013.606796255749
(2014-Dec-22.10679626)
7.9403e-05 TDB
node 78.51667767516476 0.0001186 deg
peri 189.1256195405723 0.00012033 deg
i 3.532859334958382 4.5235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      6976 days (19.10 yr)  
   first obs. used      2000-09-26  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62374  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 16:22:21  

Additional Information
 Jupiter MOID = 2.21623 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.313428565659176E-15 -3.084857939087884E-15 -7.308033016253747E-13 4.348376006923512E-15 -1.90811424289766E-13 -1.537131959519608E-16
q -3.084857939087884E-15 7.352773668950989E-15 1.872536056651417E-12 -1.512344187823245E-14 4.921356827178904E-13 4.995967009614989E-16
tp -7.308033016253747E-13 1.872536056651417E-12 6.30479458559966E-9 -4.955198918127647E-11 1.695203902684602E-9 2.225327478318486E-12
node 4.348376006923512E-15 -1.512344187823245E-14 -4.955198918127647E-11 1.406606713605417E-8 -1.405208800295192E-8 -2.441508826292395E-10
peri -1.90811424289766E-13 4.921356827178904E-13 1.695203902684602E-9 -1.405208800295192E-8 1.447977789993459E-8 2.442695270561695E-10
i -1.537131959519608E-16 4.995967009614989E-16 2.225327478318486E-12 -2.441508826292395E-10 2.442695270561695E-10 2.046221239264549E-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 16.4   n/a MPO251531  

201481 (2003 HG1)          Discovered 2003-Apr-21 by CSS at Catalina
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 00:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin