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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 ]

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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 
[ 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 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1954-Jan-11 00:22 00:01 Jupiter 1.97314754724685 1.97314723932092 1.97314785517265 2.97101367845077 2.82283061575252 2434753.515061698 1.17648078289555 34.8301380647872 10.8292204946521 89.2354167164603 4532186.64972429 T 33 CATAB v2.0g-lin.ifort 2021-May-04 01:35:28 2021-May-04 01:35
1988-Nov-17 21:14 < 00:01 Jupiter 1.9656745413342 1.96567426813554 1.96567481453275 3.14048558580843 3.00013935180616 2447483.384982589 0.509856875547405 37.247881150703 8.8721780888023 88.1548790775499 4711885.4841391 T 33 CATAB v2.0g-lin.ifort 2021-May-04 01:35:28 2021-May-04 01:35
2119-Nov-01 14:29 00:02 Jupiter 1.96722911858778 1.96722884487337 1.96722939230209 3.03025418682142 2.88466772598213 2495313.103451861 2.04015434919648 40.3510344933944 8.95118130584845 86.3352557062128 4353342.218707 T 33 CATAB v2.0g-lin.ifort 2021-May-04 01:35:28 2021-May-04 01:35
2154-Sep-11 17:27 00:03 Jupiter 1.99251049687615 1.99251006697136 1.99251092678185 3.33668708288955 3.2067544911542 2508046.227420973 2.69678960317925 96.4701279697839 10.5730139142887 -84.9462070119183 4351844.93715937 T 33 CATAB v2.0g-lin.ifort 2021-May-04 01:35:28 2021-May-04 01:35

Alternate Designations
 1998 XM6 = 1978 WS13 = 1996 LE5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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