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 ]  
2389 Dibaj (1977 QC1)
Classification: Main-belt Asteroid          SPK-ID: 2002389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2344050502877344 4.3862e-08  
a 2.443554141199861 8.0077e-09 au
q 1.870772709851106 1.0724e-07 au
i 7.834998050282662 5.1074e-06 deg
node 333.7806391138456 2.3009e-05 deg
peri 337.5626758830778 2.4446e-05 deg
M 346.3293785215379 7.2663e-06 deg
tp 2458653.480631868060
(2019-Jun-18.98063187)
2.8131e-05 TDB
period 1395.183642715206
3.82
6.8582e-06
1.878e-08
d
yr
n .2580305480785267 1.2684e-09 deg/d
Q 3.016335572548616 9.8847e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2084  
   data-arc span      30757 days (84.21 yr)  
   first obs. used      1935-09-22  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43817  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:14:57  

Additional Information
 Earth MOID = .858724 au 
 Jupiter MOID = 2.28451 au 
 T_jup = 3.449 
[ 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 12.9   n/a MPO502176  
diameter diameter 5.820 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.434   0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2389 Dibaj (1977 QC1)          Discovered 1977-Aug-19 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 QC1 = 1935 SH = 1950 ND1 = 1958 UL = 1973 QW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 16:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin