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437844 (1999 MN)
Classification: Aten [NEO, PHA]          SPK-ID: 2437844
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6654838763031148 6.7566e-08  
a .6738298071162458 3.1795e-09 au
q .2254069351079464 4.6208e-08 au
i 2.022138981240192 6.8813e-06 deg
node 80.89222187787867 3.5914e-05 deg
peri 9.731447261799966 3.6604e-05 deg
M 144.7727956451349 2.6865e-05 deg
tp 2458919.252835264937
(2020-Mar-10.75283526)
1.4714e-05 TDB
period 202.0336705821276
0.55
1.43e-06
3.915e-09
d
yr
n 1.781881203082228 1.2612e-08 deg/d
Q 1.122252679124545 5.2954e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 3.445757138832172E-14 3.408E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      159  
   data-arc span      7688 days (21.05 yr)  
   first obs. used      1999-06-22  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58527  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-08 05:59:09  

Additional Information
 Earth MOID = .00560988 au 
 Jupiter MOID = 4.09074 au 
 T_jup = 8.259 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 21.4   n/a MPO177953  
rotation period rot_per 5.495 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hergenrother, C.W.; Whiteley, R.J. (2005) Bull. Amer. Astron. Soc. 37, 636-637.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hicks, M.; Mayes, D.; McAuley, A.; Foster, J. (2010) Astronomer's Telegram 2706. http://www.astronomerstelegram.org]
[Hergenrother, C.W.; Whitely, R.J. (2011) Icarus 214, 194-209.]

437844 (1999 MN)          Discovered 1999-Jun-22 by CSS at Catalina
Reference: Last Updated: 2015-07-06

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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