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78381 (2002 PQ135)
Classification: Main-belt Asteroid          SPK-ID: 2078381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2242559787261171 4.7117e-08  
a 2.760727708298225 1.6263e-08 au
q 2.141618014077496 1.3191e-07 au
i 1.390380844342195 6.3477e-06 deg
node 352.3534410224444 0.00018479 deg
peri 59.86722759969171 0.00018534 deg
M 343.3262299125196 1.471e-05 deg
tp 2459474.100603009841
(2021-Sep-16.60060301)
6.8839e-05 TDB
period 1675.458935620019
4.59
1.4805e-05
4.053e-08
d
yr
n .2148665015575441 1.8986e-09 deg/d
Q 3.379837402518954 1.991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      10690 days (29.27 yr)  
   first obs. used      1991-04-13  
   last obs. used      2020-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:36:31  

Additional Information
 Earth MOID = 1.15255 au 
 Jupiter MOID = 2.00598 au 
 T_jup = 3.304 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456964.5 (2014-Nov-03.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2291859935836557 4.7548e-08  
q 2.12566408962337 1.3386e-07 au
tp 2457795.666817768916
(2017-Feb-11.16681777)
5.8385e-05 TDB
node 352.7775102856688 0.00018484 deg
peri 59.09110134382088 0.00018534 deg
i 1.392244745905091 6.3544e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      10690 days (29.27 yr)  
   first obs. used      1991-04-13  
   last obs. used      2020-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:36:31  

Additional Information
 Jupiter MOID = 2.00598 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.260856236394167E-15 -6.337942180975349E-15 -1.319242454404838E-12 2.568762964617574E-14 -3.181337885993454E-13 -1.536721014727724E-16
q -6.337942180975349E-15 1.79182201966857E-14 3.957838394296942E-12 -7.450618067616523E-14 9.317175862691478E-13 5.858804194182003E-16
tp -1.319242454404838E-12 3.957838394296942E-12 3.408864080672783E-9 -4.161124359039628E-11 8.06348667727903E-10 2.575740159445525E-13
node 2.568762964617574E-14 -7.450618067616523E-14 -4.161124359039628E-11 3.416516243073794E-8 -3.416361919859605E-8 3.234936431271766E-10
peri -3.181337885993454E-13 9.317175862691478E-13 8.06348667727903E-10 -3.416361919859605E-8 3.435031662162175E-8 -3.233550969357151E-10
i -1.536721014727724E-16 5.858804194182003E-16 2.575740159445525E-13 3.234936431271766E-10 -3.233550969357151E-10 4.03781527623825E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.38   n/a E2020-QM9  
rotation period rot_per 17.9 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

78381 (2002 PQ135)          Discovered 2002-Aug-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 PQ135 = 1993 RR10 = 1998 XC67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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