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 ]  
4478 Blanco (1984 HG1)
Classification: Main-belt Asteroid          SPK-ID: 2004478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343143592049904 1.6071e-08  
a 2.248540763606357 5.4735e-09 au
q 1.946529451796269 3.5551e-08 au
i 3.281717156705438 3.9913e-07 deg
node 266.9907373890746 9.9888e-06 deg
peri 5.024808250285555 1.3202e-05 deg
M 259.2659285286556 6.3239e-06 deg
tp 2459545.106497407288
(2021-Nov-26.60649741)
2.2042e-05 TDB
period 1231.542984956328
3.37
4.4969e-06
1.231e-08
d
yr
n .2923162280143767 1.0674e-09 deg/d
Q 2.550552075416445 6.2087e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2254  
   data-arc span      25403 days (69.55 yr)  
   first obs. used      1951-09-04  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:39:35  

Additional Information
 Earth MOID = .928486 au 
 Jupiter MOID = 2.53621 au 
 T_jup = 3.615 
[ 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 14.15   n/a MPCxxxxx  
diameter diameter 3.519 km 0.623 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.347   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

4478 Blanco (1984 HG1)          Discovered 1984-Apr-23 by Ferreri and Zappala at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 HG1 = 1951 RN = 1978 TT1 = 1988 QN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-14 16:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin