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100850 (1998 HV31)
Classification: Main-belt Asteroid          SPK-ID: 2100850
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1700869736812115 6.8663e-08  
a 2.316228665238973 8.5231e-09 au
q 1.922268341214804 1.6035e-07 au
i 24.9480214316549 7.3132e-06 deg
node 220.1397450218346 1.0475e-05 deg
peri 348.9777862834596 1.7713e-05 deg
M 159.6515400903424 1.4134e-05 deg
tp 2458629.493323132936
(2019-May-25.99332313)
4.8939e-05 TDB
period 1287.569186966947
3.53
7.1068e-06
1.946e-08
d
yr
n .279596625675729 1.5433e-09 deg/d
Q 2.710188989263142 9.9727e-09 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54768  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:03  

Additional Information
 Earth MOID = .917568 au 
 Jupiter MOID = 2.27365 au 
 T_jup = 3.439 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457555.5 (2016-Jun-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696883312304648 6.879e-08  
q 1.923539074997788 1.6058e-07 au
tp 2457341.018560313837
(2015-Nov-14.51856031)
4.5986e-05 TDB
node 220.1762681271559 1.0473e-05 deg
peri 348.9120033887094 1.7703e-05 deg
i 24.95061720092642 7.3136e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54768  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:03  

Additional Information
 Jupiter MOID = 2.27365 au 
 T_jup = 3.439 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.732037252073264E-15 -1.103554924497121E-14 -1.490553910362528E-12 4.147742874177126E-14 -4.960476501040119E-13 -3.554315766718166E-16
q -1.103554924497121E-14 2.578468698665922E-14 3.569815669869336E-12 -9.658595539981379E-14 1.183463691179335E-12 8.263984876421411E-16
tp -1.490553910362528E-12 3.569815669869336E-12 2.114667496663452E-9 -2.251918732539923E-11 6.709663341718457E-10 3.150494809955853E-12
node 4.147742874177126E-14 -9.658595539981379E-14 -2.251918732539923E-11 1.09687592476527E-10 -1.057340173638753E-10 -3.645018522812118E-11
peri -4.960476501040119E-13 1.183463691179335E-12 6.709663341718457E-10 -1.057340173638753E-10 3.134114640871778E-10 3.403889565610657E-11
i -3.554315766718166E-16 8.263984876421411E-16 3.150494809955853E-12 -3.645018522812118E-11 3.403889565610657E-11 5.348935375978151E-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 15.71   n/a E2021B55  
rotation period rot_per 5.45538 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

100850 (1998 HV31)          Discovered 1998-Apr-22 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
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
1996-Dec-17 18:46 < 00:01 David 0.0391437450581456 0.0391414905932789 0.0391459997720346 11.1985792469588 11.1985792124954 2450435.282196748 0.42494607275109 201.065285598199 40.2171503367631 57.8010978014231 124167.246538432 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:05 2021-Apr-13 15:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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