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101888 (1999 NM42)
Classification: Main-belt Asteroid          SPK-ID: 2101888
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2498556472802168 4.4881e-08  
a 2.386955424188474 1.0426e-08 au
q 1.790561131648838 1.0664e-07 au
i 4.876823598815751 4.8602e-06 deg
node 307.3963710772563 5.4829e-05 deg
peri 43.83363348253995 5.5491e-05 deg
M 207.4434458743081 1.1675e-05 deg
tp 2459571.312217063700
(2021-Dec-22.81221706)
4.6448e-05 TDB
period 1346.991607935941
3.69
8.8255e-06
2.416e-08
d
yr
n .2672622441587776 1.7511e-09 deg/d
Q 2.983349716728109 1.3031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:58  

Additional Information
 Earth MOID = .788352 au 
 Jupiter MOID = 2.46611 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2496885238157519 4.4971e-08  
q 1.791049929020069 1.0692e-07 au
tp 2456873.847026842585
(2014-Aug-04.34702684)
3.4799e-05 TDB
node 307.5832982165176 5.4609e-05 deg
peri 43.16554413176249 5.5281e-05 deg
i 4.887609558512685 4.8687e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:58  

Additional Information
 Jupiter MOID = 2.46611 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.022386912514953E-15 -4.795373174594532E-15 1.690931968630008E-13 -1.185554858282002E-14 2.357933990818431E-14 -3.639491295895483E-15
q -4.795373174594532E-15 1.143201802782138E-14 -2.600384988475805E-13 2.897272091381957E-14 -2.597368900221309E-14 8.801603840641413E-15
tp 1.690931968630008E-13 -2.600384988475805E-13 1.210976546233735E-9 -5.191489066000682E-12 3.188277848421401E-10 -1.958181092691156E-12
node -1.185554858282002E-14 2.897272091381957E-14 -5.191489066000682E-12 2.982165401017431E-9 -2.972324128990498E-9 7.186759564239763E-11
peri 2.357933990818431E-14 -2.597368900221309E-14 3.188277848421401E-10 -2.972324128990498E-9 3.056027729323546E-9 -7.212510175725742E-11
i -3.639491295895483E-15 8.801603840641413E-15 -1.958181092691156E-12 7.186759564239763E-11 -7.212510175725742E-11 2.370380794306695E-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 16.11   n/a E2021B55  

101888 (1999 NM42)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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