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 ]  
2904 Millman (1981 YB)
Classification: Main-belt Asteroid          SPK-ID: 2002904
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1396546695181617 3.2206e-08  
a 2.603096720439136 1.0882e-08 au
q 2.239562108222398 8.4532e-08 au
i 15.39273963147226 4.1468e-06 deg
node 79.49886334545928 1.449e-05 deg
peri 332.0948738508745 2.1305e-05 deg
M 112.0194366573779 1.614e-05 deg
tp 2458723.163364231244
(2019-Aug-27.66336423)
6.8084e-05 TDB
period 1534.03011124172
4.20
9.6193e-06
2.634e-08
d
yr
n .2346759671546461 1.4716e-09 deg/d
Q 2.966631332655874 1.2402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2414  
   data-arc span      21972 days (60.16 yr)  
   first obs. used      1960-11-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39767  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:06:30  

Additional Information
 Earth MOID = 1.26149 au 
 Jupiter MOID = 2.38328 au 
 T_jup = 3.349 
[ 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 11.85   n/a E2021B10  
diameter diameter 15.460 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.6603 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V. (2016) Minor Planet Bull. 43, 339-342.]
geometric albedo albedo 0.169   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2904 Millman (1981 YB)          Discovered 1981-Dec-20 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 YB = 1939 VF = 1939 XG = 1960 WO = 1960 XB = 1981 WK9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-05 17:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin