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 ]  
878 Mildred (A916 RC)
Classification: Main-belt Asteroid          SPK-ID: 2000878
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2267667928924783 4.2369e-08  
a 2.359956478371136 7.2749e-09 au
q 1.824796716405087 9.8272e-08 au
i 2.065669982722247 3.7748e-06 deg
node 172.836857918723 0.00010055 deg
peri 190.194917636152 0.00010086 deg
M 219.2721456463909 1.0358e-05 deg
tp 2459518.144951888232
(2021-Oct-30.64495189)
3.9708e-05 TDB
period 1324.202543524279
3.63
6.123e-06
1.676e-08
d
yr
n .2718617342645207 1.2571e-09 deg/d
Q 2.895116240337186 8.9246e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      37853 days (103.64 yr)  
   first obs. used      1916-09-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51834  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:14:29  

Additional Information
 Earth MOID = .822394 au 
 Jupiter MOID = 2.56257 au 
 T_jup = 3.516 
[ 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 14.7   n/a MPO337250  
diameter diameter 2.529 km 0.381 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.660 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; French, L.M. (2011) Minor Planet Bull. 38, 1-2.]
geometric albedo albedo 0.399   0.218 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

878 Mildred (A916 RC)          Discovered 1916-Sep-06 by Nicholson, S. B. at Mount Wilson
and H. Shapley
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A916 RC = 1985 VG6 = 1991 GZ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-30 03:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin