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 ]  
13806 Darmstrong (1998 XM6)
Classification: Main-belt Asteroid          SPK-ID: 2013806
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08071673019054376 3.295e-08  
a 2.935272099943732 1.2891e-08 au
q 2.698346533816743 9.7451e-08 au
i 3.065668518483783 3.7047e-06 deg
node 113.7359385981394 6.5166e-05 deg
peri 184.4649257784129 6.8661e-05 deg
M 253.2787555540091 2.2359e-05 deg
tp 2459745.026922185993
(2022-Jun-14.52692219)
0.00011477 TDB
period 1836.838513311784
5.03
1.21e-05
3.313e-08
d
yr
n .1959889219389934 1.2911e-09 deg/d
Q 3.172197666070721 1.3931e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1880  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:35:22  

Additional Information
 Earth MOID = 1.68057 au 
 Jupiter MOID = 1.97977 au 
 T_jup = 3.268 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456903.5 (2014-Sep-03.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08110892032341988 3.307e-08  
q 2.699004458672545 9.7751e-08 au
tp 2456055.003695535490
(2012-May-07.50369554)
0.00011053 TDB
node 113.7969086545012 6.4993e-05 deg
peri 181.8795784572482 6.8429e-05 deg
i 3.067699428890434 3.7102e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1880  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:35:22  

Additional Information
 Jupiter MOID = 1.97977 au 
 T_jup = 3.268 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.093615187657288E-15 -3.208948149713349E-15 2.5971494982411E-13 6.03491477245788E-15 5.762600738062863E-14 2.203598307609397E-17
q -3.208948149713349E-15 9.555308881066631E-15 -6.846158442110935E-13 -1.801463636542996E-14 -1.422671793401683E-13 -2.069178379837901E-17
tp 2.5971494982411E-13 -6.846158442110935E-13 1.221755815477193E-8 1.471144653432329E-12 2.379132242390224E-9 1.661268467681686E-12
node 6.03491477245788E-15 -1.801463636542996E-14 1.471144653432329E-12 4.224128613031671E-9 -4.217546735891204E-9 2.504177182372174E-11
peri 5.762600738062863E-14 -1.422671793401683E-13 2.379132242390224E-9 -4.217546735891204E-9 4.682499168404943E-9 -2.467943401448655E-11
i 2.203598307609397E-17 -2.069178379837901E-17 1.661268467681686E-12 2.504177182372174E-11 -2.467943401448655E-11 1.376549326538767E-11

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 14.26   n/a E2021B10  
rotation period rot_per 20. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]

13806 Darmstrong           Discovered 1998 Dec. 8 by Spacewatch at Kitt Peak.
High-school geography teacher Henry Armstrong (b. 1962) is a Canadian amateur astronomer with keen observing skills.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

[ show close-approach data ]
Alternate Designations
 1998 XM6 = 1978 WS13 = 1996 LE5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-07 06:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin