Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
37751 (1997 CH1)
Classification: Main-belt Asteroid          SPK-ID: 2037751
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04501946347597251 4.273e-08  
a 2.723974582953426 1.1807e-08 au
q 2.601342708706677 1.1654e-07 au
i 4.816232167720275 3.697e-06 deg
node 306.1800879964403 5.5471e-05 deg
peri 280.4333211667477 7.4634e-05 deg
M 350.602171511954 4.8672e-05 deg
tp 2459043.367486256372
(2020-Jul-12.86748626)
0.00022194 TDB
period 1642.112863830595
4.50
1.0677e-05
2.923e-08
d
yr
n .2192297545006861 1.4254e-09 deg/d
Q 2.846606457200175 1.2339e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2000  
   data-arc span      8587 days (23.51 yr)  
   first obs. used      1997-02-01  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:22:42  

Additional Information
 Earth MOID = 1.59657 au 
 Jupiter MOID = 2.15832 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456992.5 (2014-Dec-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04596043784232341 4.3093e-08  
q 2.601223430122058 1.178e-07 au
tp 2457391.407059152663
(2016-Jan-03.90705915)
0.00021732 TDB
node 306.2248519921243 5.5412e-05 deg
peri 278.3543402283491 7.3458e-05 deg
i 4.818077185774047 3.6969e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2000  
   data-arc span      8587 days (23.51 yr)  
   first obs. used      1997-02-01  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:22:42  

Additional Information
 Jupiter MOID = 2.15832 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.856978790217885E-15 -5.05348304151752E-15 -3.045885724492826E-12 -6.5315335630782E-15 -6.151280433674866E-13 -2.74630968510983E-15
q -5.05348304151752E-15 1.387772940902385E-14 7.619620370392009E-12 1.883432997159594E-14 1.517348942071592E-12 7.549143122218856E-15
tp -3.045885724492826E-12 7.619620370392009E-12 4.722626426887614E-8 3.875518990515318E-11 1.050528324483474E-8 8.753821435205188E-12
node -6.5315335630782E-15 1.883432997159594E-14 3.875518990515318E-11 3.07053152848922E-9 -3.051132285193177E-9 6.484935604874253E-11
peri -6.151280433674866E-13 1.517348942071592E-12 1.050528324483474E-8 -3.051132285193177E-9 5.396006732921092E-9 -6.277281922818196E-11
i -2.74630968510983E-15 7.549143122218856E-15 8.753821435205188E-12 6.484935604874253E-11 -6.277281922818196E-11 1.366743643388494E-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 13.6   n/a MPO431925  
diameter diameter 9.337 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.68 h n/a LCDB (Rev. 2019-August); 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.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.097   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37751 (1997 CH1)          Discovered 1997-Feb-01 by Kobayashi, T. at Oizumi
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 CH1 = 1999 RS25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-20 05:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin